{"title":"Calcite \u0026 Acid Neutralizer Media","description":"\u003cp\u003eCalcite for an acid neutralizer that is running low or empty. A routine top-off is usually one 50 lb box, added when the calcite is about half way down the tank. The bag supplies are a full fill for an empty tank: 3 bags for a 1.5 cubic foot tank, 4 for 2.0 and 5 for 2.5. FloMag is mixed with calcite, never used alone, when the raw pH is below 5.5 in a 2.5 cubic foot tank or below 6.0 in a 1.5 cubic foot tank. Not sure how much your tank needs? Call Aidan at 800-460-5810.\u003c\/p\u003e","products":[{"product_id":"acid-neutralizer-calcite-media-50lb","title":"Calcite Acid Neutralizer Media for Water Treatment, 50 lb Box","description":"\u003cp\u003eCalcite media for acid neutralizer tanks on acidic well water: one 50 lb box of granular crushed limestone that raises pH to about 7.0 to 7.5, enough to top off a 1.0 or 1.5 cubic foot tank.\u003c\/p\u003e\u003cp\u003eCalcite is the water treatment name for crushed, screened natural limestone, mostly calcium carbonate. Acidic water dissolves a little of it on every pass through the tank, which neutralizes the acid; once the water reaches neutral there is no acid left to dissolve it, so plain calcite is self-regulating and does not push water alkaline. Raising the pH cuts down the copper that acidic water dissolves from the pipes. Each box holds 50 lb of granular calcite, about half a cubic foot, made by Pennsy Supply (Oldcastle Industrial Minerals); the maker's Water Neutralizer fine calcite, made at its Thomasville, PA plant, is listed by NSF to NSF\/ANSI\/CAN 60. Calcite used to ship in printed 50 lb bags; parcel orders now arrive as a 50 lb cardboard box.\u003c\/p\u003e\u003ch3\u003eBest for, and not for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBest for topping off any calcite acid neutralizer tank, any brand, upflow (non-backwashing) or backwashing, Clack or Fleck valve.\u003c\/li\u003e\n\u003cli\u003eBest for filling an empty calcite tank: 2 boxes for a 1.0 cubic foot tank, 3 for a 1.5, 4 for a 2.0, 5 for a 2.5, 7 for a 3.5.\u003c\/li\u003e\n\u003cli\u003ePlain calcite is enough at pH 5.5 and up in a 2.0 or 2.5 cubic foot tank, and at pH 6.0 and up in a 1.0 or 1.5 cubic foot tank. Below that, blend in FloMag (sold separately).\u003c\/li\u003e\n\u003cli\u003eNot for iron, sulfur or manganese removal, and not a water softener: calcite only raises pH.\u003c\/li\u003e\n\u003cli\u003eA tank with a gravel bed keeps its gravel in the bottom; the calcite goes on top.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow many boxes\u003c\/h3\u003e\u003cp\u003eTop-off when the bed is about half down: about 1 box for a 1.0 or 1.5 cubic foot tank, 1 to 2 boxes for a 2.0 or 2.5. Fill to about 10 inches below the fill port. Fill from empty: 2, 3, 4, 5 or 7 boxes for a 1.0, 1.5, 2.0, 2.5 or 3.5 cubic foot tank. Typical time between top-offs: 6 to 12 months (1.0 cubic foot), 18 to 24 months (1.5), 24 to 30 months (2.0), 30 to 36 months (2.5); very acidic water and heavy use shorten it, and a weekend house goes longer. Check the level once a year with a flashlight held against the tank.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003eRaises acidic well water to about pH 7.0 to 7.5 and stops there.\u003c\/li\u003e\n\u003cli\u003eGranular: nearly all grains 0.85 to 2 mm, coarser than sand, so it stays in the tank through a backwash.\u003c\/li\u003e\n\u003cli\u003eNatural limestone, typically 84.0% calcium carbonate and 14.5% magnesium carbonate (maker's data sheet).\u003c\/li\u003e\n\u003cli\u003eThe maker's Water Neutralizer fine calcite is listed to NSF\/ANSI\/CAN 60 for drinking water treatment.\u003c\/li\u003e\n\u003cli\u003eFits any calcite acid neutralizer tank, upflow or backwashing.\u003c\/li\u003e\n\u003cli\u003eShips as one 50 lb box, free to the lower 48 states and DC.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003ePlain calcite or a FloMag blend\u003c\/h3\u003e\u003cp\u003eFloMag is a pH booster mixed into the calcite, never used by itself. On a 2.5 cubic foot tank: pH 5.0 to 5.5, 2 to 3 lb of FloMag per 50 lb of calcite; pH 4.0 to 5.0, 5 lb. Below pH 4.0 the mix is set by phone for the water. Plain calcite lands at about pH 7.0 to 7.5; a FloMag blend usually lands around 8 to 8.5, and more FloMag is not better.\u003c\/p\u003e\u003ch3\u003eHardness\u003c\/h3\u003e\u003cp\u003eThe calcium and magnesium that neutralize the acid are hardness minerals: calcite typically adds about 3 to 6 grains per gallon. A softener is recommended only if the water after the neutralizer tests 7 grains or more.\u003c\/p\u003e\u003ch3\u003eWatch before you buy\u003c\/h3\u003e\u003cp\u003e\"What Is Calcite Media? (How Long It Lasts, Cost, and When You Need FloMag)\" (https:\/\/www.youtube.com\/watch?v=EuVZ6s9_oYY) explains what calcite is, how much a 2.5 cubic foot tank holds, how long a fill lasts and when you need FloMag. \"How to Maintain Your Acid Neutralizer (Calcite Refill \u0026amp; Service)\" (https:\/\/www.youtube.com\/watch?v=DM2zxELDaxc) walks through a top-off.\u003c\/p\u003e\u003ch3\u003eTalk to Aidan before you order\u003c\/h3\u003e\u003cp\u003eFree help: call 800-460-5810 or text Aidan at 443-277-2204, 7 days a week, 8 AM to 5 PM Eastern. Send your pH and tank size and Aidan will tell you how many boxes to order and whether you need FloMag. Mid Atlantic Water is an online-only business that ships nationwide; help is by phone and text.\u003c\/p\u003e\u003ch3\u003eAdding calcite\u003c\/h3\u003e\u003cp\u003eA top-off is owner maintenance: check the level once a year, add calcite when the bed is about half down, and fill to about 10 inches below the fill port. You add to the bed; you never dump it and start over. The first pH readings after a fresh fill run high from fine dust; give it a couple of weeks of normal use before judging the pH. Do not let the tank run empty, or acidic water reaches the pipes again.\u003c\/p\u003e\u003ch3\u003eWhat ships\u003c\/h3\u003e\u003cp\u003eOne 50 lb box of granular calcite, about half a cubic foot. FloMag and funnels are sold separately. Free shipping to the lower 48 states and DC. Returns follow the published refund policy: unopened, within 30 days of delivery, with approval first; media is not covered by the performance guarantee on treatment systems.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWhat ships: One 50 lb box of granular calcite (about 1\/2 cu ft)\u003c\/li\u003e\n\u003cli\u003eMedia: Calcite: crushed, screened natural limestone\u003c\/li\u003e\n\u003cli\u003eMaker: Pennsy Supply (Oldcastle Industrial Minerals), Pennsylvania\u003c\/li\u003e\n\u003cli\u003eComposition (maker's data sheet, typical): 84.0% calcium carbonate, 14.5% magnesium carbonate\u003c\/li\u003e\n\u003cli\u003eGrain size: Nearly all grains 0.85 to 2 mm (coarser than sand)\u003c\/li\u003e\n\u003cli\u003eColor: Whitish-gray\u003c\/li\u003e\n\u003cli\u003eBulk density: 86 to 89 lb per cubic foot\u003c\/li\u003e\n\u003cli\u003eNSF listing: The maker's calcite is listed to NSF\/ANSI\/CAN 60, the drinking water standard (Water Neutralizer fine calcite, Thomasville, PA plant)\u003c\/li\u003e\n\u003cli\u003eWater after the tank: About pH 7.0 to 7.5 with plain calcite\u003c\/li\u003e\n\u003cli\u003ePlain calcite handles: pH 5.5 and up in a 2.0 or 2.5 cu ft tank; 6.0 and up in a 1.0 or 1.5\u003c\/li\u003e\n\u003cli\u003eHardness added: About 3 to 6 grains per gallon\u003c\/li\u003e\n\u003cli\u003eFits: Any calcite acid neutralizer tank, upflow or backwashing\u003c\/li\u003e\n\u003cli\u003eFill from empty: 2 boxes (1.0 cu ft), 3 (1.5), 4 (2.0), 5 (2.5), 7 (3.5)\u003c\/li\u003e\n\u003cli\u003ePrice: $145 per box, free shipping to the lower 48 states and DC\u003c\/li\u003e\n\u003cli\u003eReturns: Unopened, within 30 days of delivery, with approval first\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDoes it come in a bag or a box?\u003c\/strong\u003e A box: one 50 lb cardboard box of calcite. Older videos and reviews say bags; it is the same 50 lb of calcite.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many boxes do I need?\u003c\/strong\u003e Top-off: about 1 (1.0 or 1.5 cubic foot tank) or 1 to 2 (2.0 or 2.5). Fill from empty: 2, 3, 4, 5 or 7 for a 1.0, 1.5, 2.0, 2.5 or 3.5.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it fit another brand's neutralizer?\u003c\/strong\u003e Yes, any calcite acid neutralizer tank, upflow or backwashing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need FloMag?\u003c\/strong\u003e Only below pH 5.5 in a 2.0 or 2.5 cubic foot tank, or below 6.0 in a 1.0 or 1.5.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it safe for drinking water?\u003c\/strong\u003e It is natural limestone; the maker's Water Neutralizer fine calcite is listed to NSF\/ANSI\/CAN 60.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I return it?\u003c\/strong\u003e Unopened, within 30 days of delivery, with approval first. A 25% restocking fee applies (waived on an exchange of equal or greater value), and the buyer pays the return freight.\u003c\/p\u003e","brand":"midatlanticwater.net","offers":[{"title":"Default Title","offer_id":31580030599213,"sku":"CAL-50-BOX","price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/9523\/4605\/files\/calcite-acid-neutralizer-media-50lb-bag.jpg?v=1781302562"},{"product_id":"flomag-water-filter-media-50lb","title":"FloMag pH Booster","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #0000ff;\"\u003eFree Shipping To All Lower 48 States\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cbr\u003e--\u003cbr\u003e\n\u003cp\u003e\u003cspan style=\"color: #000000;\"\u003eFloMag, or Corosex as it is is commonly referred too, is a natural Ph booster that is mixed with calcite for use in Acid Neutralizer Systems. You want to use a Calcite\/FloMag mixture when your raw pH is below 5.5 in a 2.5 cubic foot tank, or below 6.0 in a 1.5 cubic foot tank. The standard mix is 2 to 3 pounds of FloMag per 50 lb bag of calcite, up to about 4 pounds per bag at a pH near 5.0, mixed dry in a storage bin before loading. Never use FloMag by itself. Mixtures may have to be stronger if you are using an undersized acid neutralizer tank. If you need assistance please give us a call at 800 460 5810.\u003c\/span\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eFlomag has 5 times the Ph raising power that calcite does\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eNatural Ph booster \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eFlomag is mixed with calcite media than added to acid neutralizer tank\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eShips in a 50lb Bag\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan style=\"color: #0000ff;\"\u003eNSF Certified\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eFree Shipping To All Lower 48 States\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eShips in 1-2 Business Days\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #0000ff;\"\u003e\u003cstrong\u003eMade In The USA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e","brand":"midatlanticwater.net","offers":[{"title":"Default Title","offer_id":31580030631981,"sku":"FLOMAG","price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/9523\/4605\/files\/flomag-magnesium-oxide-ph-booster-50lb.jpg?v=1780518201"},{"product_id":"one-year-calcite-1-5-acid-neutralizer","title":"Calcite Supply for 1.5 Cubic Foot Acid Neutralizer (3 Bags)","description":"\u003cp\u003e\u003cstrong\u003eCalcite supply for a 1.5 cubic foot acid neutralizer: three 50 lb bags (150 lb) of NSF\/ANSI\/CAN 60 certified crushed limestone, the full fill for a 10 x 54 inch tank.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse it to fill a tank from empty: a 1.5 cubic foot tank bought without calcite, or one that ran out. A routine top-off takes less. At about half down, a 1.5 cubic foot tank takes about 1 bag, on average every 18 to 24 months, and for that you can buy \u003ca href=\"https:\/\/midatlanticwater.net\/products\/acid-neutralizer-calcite-media-50lb\"\u003ecalcite by the 50 lb bag\u003c\/a\u003e ($145). $395 for the three bags, shipped free to the lower 48.\u003c\/p\u003e\n\n\u003ch2\u003eWhat calcite is and what it does\u003c\/h2\u003e\n\u003cp\u003eThis is the same Water Neutralizer fine calcite (Oldcastle, Thomasville, Pennsylvania) that ships with every Mid Atlantic Water acid neutralizer: granular crushed limestone, mostly calcium carbonate with some magnesium carbonate. Acidic water dissolves a little of it on every pass, which neutralizes the acid, and it stops dissolving once the water reaches neutral. Plain calcite brings water to about 7.0 to 7.5 and cannot push it alkaline. It adds about 3 to 6 grains per gallon of hardness; we recommend a softener only when the water after the neutralizer tests 7 grains or more. The full explanation is in \u003ca href=\"https:\/\/midatlanticwater.net\/blogs\/faqs\/calcite-water-filter\"\u003ewhat calcite is and how a calcite filter works\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003ePlain calcite or a FloMag blend\u003c\/h2\u003e\n\u003cp\u003ePlain calcite handles pH down to about 6.0 in a 1.5 cubic foot tank. Below that, mix \u003ca href=\"https:\/\/midatlanticwater.net\/products\/flomag-water-filter-media-50lb\"\u003eFloMag\u003c\/a\u003e (magnesium oxide, $225 per 50 lb bag) into the calcite as you load it; FloMag is a booster and is never used by itself. How much depends on your pH and tank, so call 800-460-5810 or text Aidan at 443-277-2204 with your numbers and we set the mix. The lowest well we have treated was pH 3.67. More FloMag is not better: unlike calcite it can push water past neutral.\u003c\/p\u003e\n\n\u003ch2\u003eChecking the level and topping off\u003c\/h2\u003e\n\u003cp\u003eCheck the level once a year: in a dark room, hold a flashlight against the back of the tank and the shadow line is the top of the calcite. Add calcite when it is about half down; a full tank sits about 10 inches below the fill port. You add to the bed; you never dump it and start over. Very acidic water and heavy use shorten the interval. The step-by-step is in our guide to \u003ca href=\"https:\/\/midatlanticwater.net\/blogs\/faqs\/servicing-acid-neutralizer\"\u003ehow to add calcite to an acid neutralizer\u003c\/a\u003e. After a fresh fill the first pH readings run high for a couple of weeks while the dust from the bags dissolves; test again after that.\u003c\/p\u003e\n\n\u003ch2\u003eWhat ships\u003c\/h2\u003e\n\u003cp\u003eThree 50 lb bags of granular calcite (150 lb). Free shipping to the lower 48. The calcite fits any brand of calcite acid neutralizer tank, upflow or backwashing; if you still need the tank, see our \u003ca href=\"https:\/\/midatlanticwater.net\/collections\/acid-neutralizers\"\u003ecalcite acid neutralizer systems\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eQuestions before you order\u003c\/h2\u003e\n\u003cp\u003eNot sure whether you need a full fill, a top-off, or a FloMag blend? Text Aidan your pH and tank size at 443-277-2204, or call 800-460-5810, 8 AM to 5 PM Eastern, every day. The advice is free whether or not you order.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eContents: three 50 lb bags (150 lb) of calcite, granular crushed natural limestone\u003c\/li\u003e\n\u003cli\u003eFits: 1.5 cubic foot acid neutralizer, 10 x 54 inch tank (full fill from empty)\u003c\/li\u003e\n\u003cli\u003eCertification: NSF\/ANSI\/CAN 60\u003c\/li\u003e\n\u003cli\u003eTreated water pH: about 7.0 to 7.5 with plain calcite\u003c\/li\u003e\n\u003cli\u003ePlain calcite pH range in this tank size: down to about 6.0; below that, blend with FloMag\u003c\/li\u003e\n\u003cli\u003eHardness added: about 3 to 6 grains per gallon\u003c\/li\u003e\n\u003cli\u003eAverage top-off for this tank: about 1 bag every 18 to 24 months\u003c\/li\u003e\n\u003cli\u003ePrice: $395, free shipping to the lower 48\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"midatlanticwater.net","offers":[{"title":"Default Title","offer_id":32839946469421,"sku":"CAL-50-BOX (x3)","price":395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/9523\/4605\/files\/calcite-supply-1-5-cubic-foot-acid-neutralizer-3-bags.jpg?v=1781302590"},{"product_id":"one-year-calcite-supply-for-2-0-cubic-foot-acid-neutralizer","title":"Calcite Supply for 2.0 Cubic Foot Acid Neutralizer (4 Bags)","description":"\u003cp\u003e\u003cstrong\u003eCalcite supply for a 2.0 cubic foot acid neutralizer: four 50 lb bags (200 lb) of NSF\/ANSI\/CAN 60 certified crushed limestone, the full fill for a 12 x 52 inch tank.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse it to fill a tank from empty: a 2.0 cubic foot tank bought without calcite, or one that ran out. A routine top-off takes less. At about half down, a 2.0 cubic foot tank takes about a bag and a half, on average every 24 to 30 months, and for that you can buy \u003ca href=\"https:\/\/midatlanticwater.net\/products\/acid-neutralizer-calcite-media-50lb\"\u003ecalcite by the 50 lb bag\u003c\/a\u003e ($145). $495 for the four bags, shipped free to the lower 48.\u003c\/p\u003e\n\n\u003ch2\u003eWhat calcite is and what it does\u003c\/h2\u003e\n\u003cp\u003eThis is the same Water Neutralizer fine calcite (Oldcastle, Thomasville, Pennsylvania) that ships with every Mid Atlantic Water acid neutralizer: granular crushed limestone, mostly calcium carbonate with some magnesium carbonate. Acidic water dissolves a little of it on every pass, which neutralizes the acid, and it stops dissolving once the water reaches neutral. Plain calcite brings water to about 7.0 to 7.5 and cannot push it alkaline. It adds about 3 to 6 grains per gallon of hardness; we recommend a softener only when the water after the neutralizer tests 7 grains or more. The full explanation is in \u003ca href=\"https:\/\/midatlanticwater.net\/blogs\/faqs\/calcite-water-filter\"\u003ewhat calcite is and how a calcite filter works\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003ePlain calcite or a FloMag blend\u003c\/h2\u003e\n\u003cp\u003ePlain calcite handles pH down to 5.5 in a 2.0 cubic foot tank. Below that, mix \u003ca href=\"https:\/\/midatlanticwater.net\/products\/flomag-water-filter-media-50lb\"\u003eFloMag\u003c\/a\u003e (magnesium oxide, $225 per 50 lb bag) into the calcite as you load it; FloMag is a booster and is never used by itself. How much depends on your pH and tank, so call 800-460-5810 or text Aidan at 443-277-2204 with your numbers and we set the mix. The lowest well we have treated was pH 3.67. More FloMag is not better: unlike calcite it can push water past neutral.\u003c\/p\u003e\n\n\u003ch2\u003eChecking the level and topping off\u003c\/h2\u003e\n\u003cp\u003eCheck the level once a year: in a dark room, hold a flashlight against the back of the tank and the shadow line is the top of the calcite. Add calcite when it is about half down; a full tank sits about 10 inches below the fill port. You add to the bed; you never dump it and start over. Very acidic water and heavy use shorten the interval. The step-by-step is in our guide to \u003ca href=\"https:\/\/midatlanticwater.net\/blogs\/faqs\/servicing-acid-neutralizer\"\u003ehow to add calcite to an acid neutralizer\u003c\/a\u003e. After a fresh fill the first pH readings run high for a couple of weeks while the dust from the bags dissolves; test again after that.\u003c\/p\u003e\n\n\u003ch2\u003eWhat ships\u003c\/h2\u003e\n\u003cp\u003eFour 50 lb bags of granular calcite (200 lb). Free shipping to the lower 48. The calcite fits any brand of calcite acid neutralizer tank, upflow or backwashing; if you still need the tank, see our \u003ca href=\"https:\/\/midatlanticwater.net\/collections\/acid-neutralizers\"\u003ecalcite acid neutralizer systems\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eQuestions before you order\u003c\/h2\u003e\n\u003cp\u003eNot sure whether you need a full fill, a top-off, or a FloMag blend? Text Aidan your pH and tank size at 443-277-2204, or call 800-460-5810, 8 AM to 5 PM Eastern, every day. The advice is free whether or not you order.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eContents: four 50 lb bags (200 lb) of calcite, granular crushed natural limestone\u003c\/li\u003e\n\u003cli\u003eFits: 2.0 cubic foot acid neutralizer, 12 x 52 inch tank (full fill from empty)\u003c\/li\u003e\n\u003cli\u003eCertification: NSF\/ANSI\/CAN 60\u003c\/li\u003e\n\u003cli\u003eTreated water pH: about 7.0 to 7.5 with plain calcite\u003c\/li\u003e\n\u003cli\u003ePlain calcite pH range in this tank size: down to 5.5; below that, blend with FloMag\u003c\/li\u003e\n\u003cli\u003eHardness added: about 3 to 6 grains per gallon\u003c\/li\u003e\n\u003cli\u003eAverage top-off for this tank: about a bag and a half every 24 to 30 months\u003c\/li\u003e\n\u003cli\u003ePrice: $495, free shipping to the lower 48\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"midatlanticwater.net","offers":[{"title":"Default Title","offer_id":32840051589165,"sku":"CAL-50-BOX (x4)","price":495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/9523\/4605\/files\/calcite-supply-2-0-cubic-foot-acid-neutralizer-4-bags.jpg?v=1781302607"},{"product_id":"one-year-calcite-supply-for-2-5-cubic-foot-acid-neutralizer","title":"Calcite Supply for 2.5 Cubic Foot Acid Neutralizer (5 Bags)","description":"\u003cp\u003e\u003cstrong\u003eCalcite supply for a 2.5 cubic foot acid neutralizer: five 50 lb bags (250 lb) of NSF\/ANSI\/CAN 60 certified crushed limestone, the full fill for a 13 x 54 inch tank.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse it to fill a tank from empty: a 2.5 cubic foot tank bought without calcite, or one that ran out. A routine top-off takes less. At about half down, a 2.5 cubic foot tank takes about a bag and a half, on average every 30 to 36 months, and for that you can buy \u003ca href=\"https:\/\/midatlanticwater.net\/products\/acid-neutralizer-calcite-media-50lb\"\u003ecalcite by the 50 lb bag\u003c\/a\u003e ($145). $595 for the five bags, shipped free to the lower 48.\u003c\/p\u003e\n\n\u003ch2\u003eWhat calcite is and what it does\u003c\/h2\u003e\n\u003cp\u003eThis is the same Water Neutralizer fine calcite (Oldcastle, Thomasville, Pennsylvania) that ships with every Mid Atlantic Water acid neutralizer: granular crushed limestone, mostly calcium carbonate with some magnesium carbonate. Acidic water dissolves a little of it on every pass, which neutralizes the acid, and it stops dissolving once the water reaches neutral. Plain calcite brings water to about 7.0 to 7.5 and cannot push it alkaline. It adds about 3 to 6 grains per gallon of hardness; we recommend a softener only when the water after the neutralizer tests 7 grains or more. The full explanation is in \u003ca href=\"https:\/\/midatlanticwater.net\/blogs\/faqs\/calcite-water-filter\"\u003ewhat calcite is and how a calcite filter works\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003ePlain calcite or a FloMag blend\u003c\/h2\u003e\n\u003cp\u003ePlain calcite handles pH down to 5.5 in a 2.5 cubic foot tank. Below that, mix \u003ca href=\"https:\/\/midatlanticwater.net\/products\/flomag-water-filter-media-50lb\"\u003eFloMag\u003c\/a\u003e (magnesium oxide, $225 per 50 lb bag) into the calcite as you load it; FloMag is a booster and is never used by itself. Per 50 lb bag of calcite: pH 5.0 to 5.5, 2 to 3 lb of FloMag; pH 4.0 to 5.0, 5 lb. Below pH 4.0, call and we set the mix for your water; the lowest well we have treated was pH 3.67. More FloMag is not better: unlike calcite it can push water past neutral, and a correct blend usually lands around pH 8 to 8.5.\u003c\/p\u003e\n\n\u003ch2\u003eChecking the level and topping off\u003c\/h2\u003e\n\u003cp\u003eCheck the level once a year: in a dark room, hold a flashlight against the back of the tank and the shadow line is the top of the calcite. Add calcite when it is about half down; a full tank sits about 10 inches below the fill port. You add to the bed; you never dump it and start over. Very acidic water and heavy use shorten the interval. The step-by-step is in our guide to \u003ca href=\"https:\/\/midatlanticwater.net\/blogs\/faqs\/servicing-acid-neutralizer\"\u003ehow to add calcite to an acid neutralizer\u003c\/a\u003e. After a fresh fill the first pH readings run high for a couple of weeks while the dust from the bags dissolves; test again after that.\u003c\/p\u003e\n\n\u003ch2\u003eWhat ships\u003c\/h2\u003e\n\u003cp\u003eFive 50 lb bags of granular calcite (250 lb). Free shipping to the lower 48. The calcite fits any brand of calcite acid neutralizer tank, upflow or backwashing; if you still need the tank, see our \u003ca href=\"https:\/\/midatlanticwater.net\/collections\/acid-neutralizers\"\u003ecalcite acid neutralizer systems\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eQuestions before you order\u003c\/h2\u003e\n\u003cp\u003eNot sure whether you need a full fill, a top-off, or a FloMag blend? Text Aidan your pH and tank size at 443-277-2204, or call 800-460-5810, 8 AM to 5 PM Eastern, every day. The advice is free whether or not you order.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eContents: five 50 lb bags (250 lb) of calcite, granular crushed natural limestone\u003c\/li\u003e\n\u003cli\u003eFits: 2.5 cubic foot acid neutralizer, 13 x 54 inch tank (full fill from empty)\u003c\/li\u003e\n\u003cli\u003eCertification: NSF\/ANSI\/CAN 60\u003c\/li\u003e\n\u003cli\u003eTreated water pH: about 7.0 to 7.5 with plain calcite\u003c\/li\u003e\n\u003cli\u003ePlain calcite pH range in this tank size: down to 5.5; below that, blend with FloMag\u003c\/li\u003e\n\u003cli\u003eHardness added: about 3 to 6 grains per gallon\u003c\/li\u003e\n\u003cli\u003eAverage top-off for this tank: about a bag and a half every 30 to 36 months\u003c\/li\u003e\n\u003cli\u003ePrice: $595, free shipping to the lower 48\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"midatlanticwater.net","offers":[{"title":"Default Title","offer_id":32840057421869,"sku":"CAL-50-BOX (x5)","price":595.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/9523\/4605\/files\/calcite-supply-2-5-cubic-foot-acid-neutralizer-5-bags.jpg?v=1781302599"}],"url":"https:\/\/midatlanticwater.net\/collections\/calcite-acid-neutralizer-media.oembed","provider":"Mid Atlantic Water","version":"1.0","type":"link"}