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| 428 Verified Reviews | Family Owned Since 1997 | Free Shipping
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Calcite acid neutralizers, sized by your pH
★★★★★ 5.0 from 284 verified reviews

Acid Neutralizers

Aidan
By Aidan · 32-year water expert, Mid Atlantic Water ·

Whole-house calcite acid neutralizers (also sold as pH neutralizers) in four tank sizes, 1.0 to 2.5 cubic feet. Plain calcite handles pH 5.5 to 6.9; a calcite and FloMag blend handles down to 4.0. Nine of every ten we ship are the non-backwashing type: no drain, no electricity. Aidan sizes yours free from your pH number.

Treats pH 4.0 to 6.9 (FloMag blend below 5.5)
No electricity, no drain (non-backwashing)
Natural calcite, no chemicals
NSF/ANSI 61 certified components
Free shipping, 5 yr valve / 10 yr tank warranty
30-day return on uninstalled equipment
Acid Neutralizer for Well Water: The Complete Guide
Watch the 6-minute complete guide

Of the acidic wells our customers have had lab-tested, four in five came back at pH 6.0 or above, the range plain calcite handles on its own. The lowest well we have treated with a calcite and FloMag blend tested pH 3.67.

Non-Backwashing Acid Neutralizers (Upflow Calcite)

Clack C1190 upflow systems in 1.0, 1.5, 2.0 and 2.5 cubic feet, picked by your pH. No electricity, no drain, no salt. Nine of every ten neutralizers we ship are this type. Calcite ships in separate 50 lb bags and is loaded into the tank at install.

Backwashing Acid Neutralizers (Downflow)

Fleck 2510SXT systems that rinse the calcite bed out to a drain on a schedule set in the valve, about 70 gallons (1.5 cu ft) or 140 gallons (2.0 and 2.5 cu ft) per backwash. The one to buy when your pH is below 7 and your iron is above 0.5 ppm, or heavy sediment would collect in the tank; it goes ahead of an iron filter. Needs a 120V outlet and a drain. Drain tubing is not included.

Acid Neutralizer + Water Softener Packages

An acid neutralizer and a Fleck softener shipped together for wells with both low pH and hard water. The neutralizer goes first; the softener takes out the 3 to 6 grains of hardness the calcite adds.

Replacement Calcite & FloMag Media

Refill media for a tank you already own: 50 lb bags of calcite and of FloMag, plus bundled refill supplies by tank size. Check the media level once a year with a flashlight and top off when it is about half down; most tanks take a bag every 18 to 36 months (6 to 12 on a 1.0).

Free expert sizing

Text me your water test. I’ll send you a product link.

I read every water test personally and text back a recommendation. Same day. No chatbot, no upsell pressure, no charge.

Aidan
Aidan Water Expert
Text me your water test, I’ll send you a link to the right system.
Tap to text 443-277-2204
Or email Aidan instead
  1. Send your test

    Photo, PDF, or just type the numbers, whatever’s easiest. Don’t have a test yet? Describe what you’re seeing.

  2. Aidan reads it personally

    Real co-owner. Not a chatbot, not a script, not a sales rep on quota. He’s sized thousands of systems.

  3. Get a direct link to what you need

    Aidan texts you the exact product page that fits your water. Buy it, bookmark it, or take the answer elsewhere. No pressure either way.

We never send spam. We never sell your number. Aidan answers personally, 7 days a week, 8a–5p ET.

Acid Neutralizer Comparison

Mid Atlantic Water vs. SpringWell, Clean Water Store, US Water & Amazon

Honest head-to-head: how our Clack 2.5 cu ft non-backwashing acid neutralizer compares to the systems most well-water shoppers are also looking at. Specs are pulled from each company's published product pages and install manuals. What separates the MAW system from the rest: the Vortech distributor tank (gravel-free, internal distributor for even flow and no channeling), a USA-made Clack C1190 upflow valve with no electronics or drain plumbing, a large side fillport that lets you top off the calcite bed without removing the valve, five cleanly sized non-backwashing options from 1.0 to 3.5 cu ft, and a FloMag blend option that reliably handles pH down to 4.0. Calcite ships in carry-friendly 50 lb bags so you can move the system into a basement a bag at a time, instead of wrestling a ~250 lb fully loaded tank down the stairs.

Mid Atlantic Water Clack 2.5 cubic foot non-backwashing acid neutralizer with Vortech tank and natural calcite media SpringWell Calcite pH whole house acid neutralizerClean Water Store upflow calcite acid neutralizer with translucent tankUS Water Systems upflow calcite pH neutralizer filterGeneric Amazon marketplace upflow calcite acid neutralizer tank system (Oceanic Water Systems, WECO, and similar small-seller brands)
  MAW Clack 2.5 cu ft (NB)SpringWell Calcite pHClean Water Store UpflowUS Water Upflow CalciteAmazon marketplace systems
System type Upflow non-backwashing calciteBackwashing (electronic head)Upflow calcite (also sells backwashing)Upflow calciteUpflow calcite (budget marketplace)
Tank Vortech distributor (USA, gravel-free)Standard mineral tankTranslucent polyester tankStandard mineral tankGeneric FRP tank (often imported)
Made in USA Yes (Clack valve, Enpress tank, assembled in PA)Made and assembled in U.S. (per site)Not specifiedNot specifiedMostly imported components
Control valve Clack C1190 (Wisconsin, USA)Electronic backwash head (Bluetooth)In/out valve with bypass (no controller)In/out head assembly with bypassGeneric in/out adapter (no controller)
Calcite media Food-grade calcite (NSF), 50 lb bagsGeneric calcite, ships in bagsNSF-certified white marble calcite, includedGeneric calcite, ships in bagsGeneric calcite, ships in bags
Runs without electricity Yes (no head, no power)No (powered electronic head)Yes (upflow models)YesYes
Runs without a drain Yes (no backwash)No (50' drain line, 7 GPM backwash)Yes (upflow models)YesYes
pH range (calcite only) 5.5 to 6.96.0 to 6.56.0 to 6.9Not specifiedVaries (listing dependent)
pH range (with FloMag blend) 4.0 to 6.9Not offeredCalcite Blend option (+$60, pH 5.0 to 5.9)Not offered as system optionRare; some Corosex blends
Side fillport for calcite refills Yes (large fillport, valve stays put)Yes (small cap under neoprene jacket)No (unscrew valve top with wrench)No (dome hole on top of tank)No (must un-thread top adapter)
Tank sizes offered 1.0 / 1.5 / 2.0 / 2.5 / 3.5 cu ft1 size only (2.5 cu ft)7 upflow sizes (1.0 to 5.0 cu ft)2 sizes (1.5 and 2.5 cu ft)1.0 / 1.5 cu ft most common
Bypass valve included Yes (1" Clack)YesYes (in/out valve with bypass)YesNo
NSF/ANSI 61 certified Yes (components)Yes (certified components)Yes (tanks and valves)Not specifiedRarely stated
Licensed plumber recommended Yes (about 2 hrs typical, no electrical)Yes (2-3 hrs, outlet + drain needed)Yes (simple pipe connection)YesYes (you also fill the tank)
Phone consult included Yes, free sizing with Aidan (32 yrs experience)LimitedYes (WQA Certified Technicians)Yes (Certified Water Specialists)None (chat with seller via Amazon)
Warranty 5 yr valve / 10 yr tank"Lifetime"* (10 yr tank, 5 yr head)5 yr valve / 10 yr tank, 90-day return10 yr tank / 5 yr head + 1-yr money-backSeller-dependent (often 1 yr)
Price (system only) $1,195 to $1,495 non-backwashing; $1,495 to $2,195 backwashing~$1,756 (single 2.5 cu ft size)$1,208 to $2,751 (7 upflow sizes)$995 to $1,106$650 to $700 (budget marketplace)

You will also find budget acid neutralizers on Amazon, usually upflow tank systems in the $400 to $700 range. They do raise pH, but they cut the corners we do not: a generic (often imported) fiberglass tank, a basic in/out adapter instead of a USA-made Clack valve, calcite you funnel into the tank yourself, and warranty coverage that varies by seller and is often capped at one year. Going that route trades the Vortech distributor tank, Clack valve, large side fillport, FloMag option, and live phone sizing for roughly $500 in savings. You will also see replacement-calcite bags sold on their own, but those solve the refill, not the system.

A note on "lifetime" warranties: SpringWell's "lifetime" warranty is really a defect-in-materials guarantee. The fine print caps the electronic control head at 5 years and the mineral tank at 10 years, and that 10-year tank coverage only applies to tanks 14" or larger. Our 5-year valve and 10-year tank warranty is exactly what we honor, no asterisk.

Step 1: Find Your Problem

What are the signs of low pH (acidic) well water?

Five signs of acidic well water: blue-green stains on white sinks and tubs, pinhole leaks in copper pipe, a metallic taste, brass fittings turning chalky pink, and copper or lead showing up on a water test. Any one of them means the water is dissolving your plumbing; a calcite acid neutralizer raises the pH to neutral and stops it.

Blue-green staining around a faucet on a white porcelain sink caused by acidic well water dissolving copper plumbing

Blue-green stains

On porcelain sinks, tubs, and white laundry. Tells you copper is dissolving into the water.

YES Acid neutralizer fixes this
Close-up of a copper plumbing pipe with a pinhole leak and green verdigris corrosion from acidic well water

Pinhole leaks in copper pipes

Tiny weeping leaks in copper supply lines, soldered joints, or hot water lines. The acid is eating the pipe from the inside.

YES Acid neutralizer fixes this
Close-up of well water in a clear glass with subtle blue-green tint from dissolved copper

Metallic or sour taste

Water tastes like a penny or has a sour edge, especially first draw in the morning. That's dissolved copper, lead, or zinc from your plumbing.

YES Acid neutralizer fixes this
Close-up of a chalky pink-tinged corroded brass plumbing fitting showing dezincification damage from low pH well water

Brass fittings & PEX manifolds failing early

Dezincification turns brass valves chalky and pink. PEX manifolds and water heater nipples are corroding faster than they should.

YES Acid neutralizer fixes this
Close-up of a water testing kit with multiple test strips showing acidic well water results

Elevated copper or lead in a water test

Your water test came back showing copper or lead above the EPA action level (1.3 mg/L copper, 15 ppb lead). Almost always a low-pH leaching problem, not a contaminated well.

YES Acid neutralizer fixes this
Mid Atlantic Water well water test kit box

We always recommend testing your water first

We need your starting pH (and ideally your hardness, copper, and lead) to size a neutralizer correctly. A 53-contaminant certified mail-in lab test reads them all at once. We size your system free. $199, ships free.

TEST IT $199 - Free sizing
Step 2: Match Your System

Match your problem to the right system

Most calls we take fit one of these five patterns. Find yours here; the sizing chart below picks the tank size.

Just low pH, nothing else? A non-backwashing calcite neutralizer, $1,195 to $1,495 by size, is the whole fix. Iron above 0.5 ppm: a backwashing Fleck neutralizer ($1,495 to $2,195), placed ahead of the iron filter. pH below 5.5 in a 2.0 or 2.5 (below 6.0 in a 1.0 or 1.5): add the FloMag blend, $200 on any size. Hard water too: the neutralizer and softener packages, from $3,095.

Not sure? Call Aidan at 800-460-5810 →
Backwashing vs non-backwashing

Which type of acid neutralizer do you need?

Short answer: if your only problem is low pH, you want a non-backwashing (upflow) acid neutralizer. You need the backwashing (downflow) Fleck 2510SXT only when your pH is below 7 and your iron is above 0.5 ppm, or heavy sediment would collect in the tank. Both use the same calcite and raise the pH the same way.

Nine of every ten we ship
Non-backwashing upflow Vortech calcite acid neutralizer tank with a Clack in and out head, no drain and no electrical connection

Non-backwashing (upflow)

Vortech tank, Clack C1190 upflow head

Best for: acidic well water with iron at 0.5 ppm or less and clear water, which is most low-pH wells.
  • No electricity and no drain line
  • Nothing is flushed, no water wasted
  • Fewest parts; a plumber has it running in about 2 hours

Browse the upflow non-backwashing acid neutralizers.

For iron above 0.5 ppm or heavy sediment
Backwashing downflow calcite acid neutralizer with an electronic Fleck control valve and a drain line for periodic bed cleaning

Backwashing (downflow)

Electronic Fleck 2510SXT control valve

Best for: pH below 7 with iron above 0.5 ppm, or sediment that would foul the calcite. It goes ahead of the iron filter.
  • Rinses iron and sediment out of the bed on a schedule set in the valve
  • Needs a 120V outlet and a drain; drain tubing is not included
  • Sends about 70 gallons (1.5 cu ft) or 140 gallons (2.0 and 2.5 cu ft) to the drain per backwash

Browse the downflow backwashing acid neutralizers.

The full comparison, with what each type costs to run: Backwashing vs. Non-Backwashing Acid Neutralizer. Not sure what your iron number is? A water test settles it, or text Aidan your results.

Step 3: Pick a size

What size acid neutralizer do I need?

Your pH decides the size first, then how many showers and faucets run at once; how many people live there matters less than you would think. Plain calcite handles pH down to 5.5 in a 2.0 or 2.5, down to 6.0 in a 1.0 or 1.5; below that, the FloMag blend ($200 on any size). Flow rate does not matter on a non-backwashing tank. The full method, every size with its installed height, and what buyers of each size saw: Acid Neutralizer Sizing Guide.

  1.0 cu ft 1.5 cu ft 2.0 cu ft 2.5 cu ft
NUMBER ONE SELLER
Clack 1.0 Cubic Foot Vortech (10x44) Non Backwashing Acid Neutralizer Clack 1.5 Cubic Foot (10x54) Vortech Tank Non Backwashing Acid Neutralizer Clack 2.0 Cubic Foot Non Backwashing Acid Neutralizer Clack 2.5 Cubic Foot Non Backwashing Acid Neutralizer
Tank size10" x 44" (48" installed)10" x 54" (58" installed)12" x 52" (56" installed)13" x 54" (58" installed)
HouseholdWhere only a 10 in tank, 48 in tall, fits1-2 people2-4 people3+ people, or any pH below 6.0
Bathrooms11-22-32-6
Treatment range (calcite only)pH 6.0 to 6.9pH 6.0 to 6.9pH 5.5 to 6.9pH 5.5 to 6.9
Treatment range (with FloMag)pH below 6.0 (with FloMag)pH below 6.0 (with FloMag)pH 4.0 to 5.5 (with FloMag)pH 4.0 to 5.5 (with FloMag)
Max flow before pressure drop6 GPM10 GPM12 GPM17 GPM
Backwash requiredNone (NB upflow)None (NB upflow)None (NB upflow)None (NB upflow)
PriceFrom $1,195From $1,295From $1,395From $1,495
Shop now Shop now Shop now Shop now
Starting pH

The pH of your raw well water before treatment. Plain calcite handles pH 5.5 to 6.9 in a 2.0 or 2.5 cu ft tank and 6.0 to 6.9 in a 1.0 or 1.5 (the smaller bed has less contact time). Below that, a calcite and FloMag (magnesium oxide) blend handles down to pH 4.0; the lowest well we have treated with a blend tested 3.67.

Max flow before pressure drop

A ceiling, not a requirement: how much water can pass through at once before you would notice a pressure drop at the showers. 6 GPM on the 1.0, 10 on the 1.5, 12 on the 2.0, 17 on the 2.5. Your well pump's GPM does not have to match it; a non-backwashing tank works on any pump.

Calcite refill cadence

Calcite dissolves into the water as it works, so you add more; you never replace it. Check the level once a year with a flashlight and top off when it is about half down. Typical intervals: 1.0 cu ft every 6 to 12 months, 1.5 every 18 to 24, 2.0 every 24 to 30, 2.5 every 30 to 36. A FloMag blend does not change the interval. The side fillport means no replumbing.

Clack 1.0 Cubic Foot Vortech (10x44) Non Backwashing Acid Neutralizer

1.0 cu ft

From $1,195
Household
Where only a 10 in tank, 48 in tall, fits
Bathrooms
1
Treatment range (calcite only)
pH 6.0 to 6.9
Treatment range (with FloMag)
pH below 6.0 (with FloMag)
Tank size
10" x 44" (48" installed)
Max flow before pressure drop
6 GPM
Backwash required
None (NB upflow)
Shop 1.0 cu ft
Clack 1.5 Cubic Foot (10x54) Vortech Tank Non Backwashing Acid Neutralizer

1.5 cu ft

From $1,295
Household
1-2 people
Bathrooms
1-2
Treatment range (calcite only)
pH 6.0 to 6.9
Treatment range (with FloMag)
pH below 6.0 (with FloMag)
Tank size
10" x 54" (58" installed)
Max flow before pressure drop
10 GPM
Backwash required
None (NB upflow)
Shop 1.5 cu ft
Clack 2.0 Cubic Foot Non Backwashing Acid Neutralizer

2.0 cu ft

From $1,395
Household
2-4 people
Bathrooms
2-3
Treatment range (calcite only)
pH 5.5 to 6.9
Treatment range (with FloMag)
pH 4.0 to 5.5 (with FloMag)
Tank size
12" x 52" (56" installed)
Max flow before pressure drop
12 GPM
Backwash required
None (NB upflow)
Shop 2.0 cu ft
Clack 2.5 Cubic Foot Non Backwashing Acid Neutralizer

2.5 cu ft

From $1,495
Household
3+ people, or any pH below 6.0
Bathrooms
2-6
Treatment range (calcite only)
pH 5.5 to 6.9
Treatment range (with FloMag)
pH 4.0 to 5.5 (with FloMag)
Tank size
13" x 54" (58" installed)
Max flow before pressure drop
17 GPM
Backwash required
None (NB upflow)
Shop 2.5 cu ft
Installation

We ship it. Your plumber installs it.

We recommend a licensed plumber, and Aidan supports your plumber by phone at 800-460-5810. What ships: the tank, the control valve with the bypass valve pre-installed, the 1 inch connectors, the fill funnel, and the calcite in separate 50 lb bags, loaded into the tank at install. Your plumber brings the pipe, fittings and a shutoff valve. Backwashing systems also need 1/2 inch drain tubing (not included) and a 120V outlet. Step by step, with the fill and start-up: How to Install an Acid Neutralizer.

About 2 hrs

Typical licensed-plumber install for a non-backwashing system. A backwashing system adds the drain line and the outlet.

1"

Plumbing connections on the inlet, outlet, and bypass. Easily adapted to 3/4" with standard bushings. CPVC with solvent cement, PEX with SharkBite, or copper with SharkBite or sweat fittings all work.

100%

Phone support included. Aidan walks your plumber through anything unusual about your specific setup, including FloMag blending if your pH is below 5.5.

Watch a full acid neutralizer install

Watch a full acid neutralizer install

What to have ready

  • 1" plumbing with shut-offsInlet and outlet, with valves upstream and downstream to isolate the system for service.
  • Clear floor space by the pressure tankThe tanks are 10 to 13 in across and 48 to 58 in tall installed. The neutralizer goes right after the well pressure tank and before any softener; a backwashing neutralizer goes ahead of an iron filter.
  • Floor drain or waste pipe (backwashing only)For the 1/2 in drain tubing, which is not included. Each backwash sends about 70 gallons (1.5 cu ft) or about 140 gallons (2.0 or 2.5 cu ft) to the drain. Not needed for non-backwashing systems.
  • 120V outlet (BW only)Within 6 ft of the tank for the Fleck control valve. Not required for non-backwashing systems.

What your plumber will do

  1. Shut off your well pump and open a faucet to bleed pressure from the line.
  2. Position the tank after the pressure tank and before any softener, on the cold water main. A backwashing neutralizer goes ahead of an iron filter.
  3. Set the control valve on the tank; the 1 inch bypass valve is already on the valve. Clack C1190 on a non-backwashing tank, Fleck 2510SXT on a backwashing tank.
  4. Load the calcite through the fill funnel: tape over the center tube first so no media falls down it. Plumb the 1 inch inlet (IN) and outlet (OUT); CPVC, PEX with SharkBite, or copper all work.
  5. For backwashing systems only: run 1/2" drain tubing from the valve drain port to a floor drain or waste pipe, maintaining an air gap.
  6. For backwashing systems only: plug the 24V transformer into a standard 120V outlet.
  7. Open the water valve slowly, 1/4 turn at a time. A sudden rush shifts the calcite bed. Flush 10 to 15 minutes until the water runs clear.
  8. Loosen the fill cap a turn while the tank fills so trapped air escapes, then snug it a quarter to a half turn past hand-tight. Over-tightening splits the tank lip.
  9. Backwashing systems only: set the time of day and the days between backwashes on the Fleck valve (the Day Override setting).

Show your plumber exactly what's going in. The system builder generates a plumbing schematic for your specific setup. Send it to your plumber before install day.

Open the system builder
Real customers, real low-pH wells

What people on acidic well water say after install

Verified by Stamped.io

Reviews are collected by Stamped.io, a third-party review service that emails customers after their order. Stamped does not let us edit a review’s words or star rating.

Customer install photo by Dale H.
★★★★★
Does exactly what it's supposed to do
Easy, bullet-proof installation. No moving parts and it does exactly what it's supposed to do. The hardest part is getting the calcite into the tank. Raised my pH from 6.8 to a perfect 7.6! I had also previously installed the same item in my daughter's water system. Her pH was 5.2. Following Aidan's recommendation I added 2 lbs of FloMag for every bag of calcite. The pH went to 7.8 and then leveled out to a perfect 7.4. With both systems it was installed between a backwashing iron filter using Katalox Light media and a 40,000 grain water softener. Tech support via text message was fast and courteous. I definitely recommend this product.
Dale H. , United States
Verified Buyer
Clack 2.5 Cubic Foot Non Backwashing Acid Neutralizer · April 2022
Customer install photo by Richard Pierce
★★★★★
Easy install and great customer service
After only 4 short years I started noticing a strange aqua colored residue around several solder joints in the feed for the radiant heating system in our house. Some research soon confirmed it was being caused by a high acidic level in our well water. Some more research about how to deal with the issue brought up Mid Atlantic Water so I decided to go with their acid neutralizing system. I'm no stranger to plumbing and I'm no expert either, but the install was pretty straight forward and I even installed an inline sediment filter as suggested. Now after about 3 weeks the pH level went from 6.1 to almost 8 and has been slowly coming down. A check today showed it at 7.6. I would recommend Mid Atlantic to anyone in need of this type of system. Shipping was quick and Aidan was very helpful when I had questions.
Richard Pierce , United States
Verified Buyer
Clack 1.5 Cubic Foot Non Backwashing Acid Neutralizer · February 2021
Customer install photo by Norbert Cooley
★★★★★
Clack 2.5 cu ft non backwashing acid neutralizer install
Found the install to be very straight forward, easy for any DIYer. Website videos were very helpful and really a must as many install recommendations in the videos were not part of the written instructions. Recommendation to replenish calcite was when there was 2 to 3 bags remaining in the tank. Prior to installation our pH was 5.7. After installation, hardness (reported as pH) settled between 7.5 and 7.8. Big upgrade for the house and one I'd recommend to any homeowner sizing their own system.
Norbert Cooley , United States
Verified Buyer
Clack 2.5 Cubic Foot Non Backwashing Acid Neutralizer · February 2024
FAQ

Frequently asked questions

Non-backwashing calcite neutralizers run $1,195 (1.0 cu ft) to $1,495 (2.5 cu ft); the calcite and FloMag blend adds $200 on any size. Backwashing Fleck systems run $1,495 to $2,195. Neutralizer and softener packages start at $3,095. Shipping is free. Plumber labor is on top; our cost guide covers what plumbers charge and what the calcite costs over the years.

For pH 6.0+ with 1-2 people, a 1.5 cubic foot works. For pH 6.0+ with 3+ people, or any pH below 6.0, go with the 2.5 cubic foot. When in doubt, bigger is better. pH decides the size first; how many people live there matters less than how many fixtures run at once. The full method is in our sizing guide.

Non-backwashing (upflow), unless your pH is below 7 and your iron is above 0.5 ppm, or heavy sediment would collect in the tank. Nine of every ten neutralizers we ship are non-backwashing: no drain, no outlet, no water down the drain. When you do need the backwashing Fleck 2510SXT, it goes ahead of the iron filter, because iron filters want a pH near 8. Full comparison: Backwashing vs. Non-Backwashing Acid Neutralizer.

Check the level once a year with a flashlight and add calcite when it is about half down. Typical intervals: a 1.0 cu ft tank every 6 to 12 months, a 1.5 every 18 to 24, a 2.0 every 24 to 30, a 2.5 every 30 to 36. Lower pH and heavier water use shorten it; a FloMag blend does not change it. The tank has a side fillport, so a refill is a funnel job, no replumbing: How to Service Your Acid Neutralizer.

About 3 to 6 grains per gallon. Calcite is calcium carbonate, so the calcium it dissolves shows up as hardness. Most acidic well water is naturally soft, so most people do not notice. If your water already tests above 7 grains, put a softener after the neutralizer; we sell the two as a package.

If your pH is below 7 and you see the corrosion signs, yes: blue-green stains on white sinks and tubs, pinhole leaks in copper, a metallic taste, or copper or lead on a water test. Acidic water keeps dissolving copper every day it runs, so it is cheaper to size a neutralizer when the stains start than after a pipe fails. Not sure of your pH? A certified lab test reads it, and Aidan sizes the system from the result for free.

Learn more

Acid Neutralizer guides & deep-dives

Acid Neutralizers: The Complete Guide

Acid Neutralizers: The Complete Guide

What low pH does to a house, how calcite fixes it, and what the whole thing costs.

Read the guide →
Acid Neutralizer Sizing Guide: What Size Do You Need?

Acid Neutralizer Sizing Guide: What Size Do You Need?

pH first, then fixtures at once; every size with its installed height and price.

Read the guide →
Backwashing vs. Non-Backwashing Acid Neutralizer

Backwashing vs. Non-Backwashing Acid Neutralizer

The 0.5 ppm iron rule, and what each type costs to run.

Read the guide →
Acid Neutralizer Cost: What to Expect in 2026

Acid Neutralizer Cost: What to Expect in 2026

System prices, what plumbers charge, and the calcite over the years.

Read the guide →
How to Fix Acidic Well Water

How to Fix Acidic Well Water

Raise the pH with a calcite neutralizer: what to buy and where it goes.

Read the guide →
How Does an Acid Neutralizer Work?

How Does an Acid Neutralizer Work?

Calcite filtration explained, step by step, with the FloMag blend.

Read the guide →
How to Install an Acid Neutralizer for Well Water

How to Install an Acid Neutralizer for Well Water

What ships, what your plumber brings, where it goes, and how to fill and start it without damaging the tank.

Read the guide →
How to Service Your Acid Neutralizer

How to Service Your Acid Neutralizer

The yearly check, when to add calcite, and how the refill goes through the side fillport.

Read the guide →
Personalized recommendation

Want Aidan to size it for you?

Paste your water test below. Aidan replies with the tank size, whether you need the FloMag blend for your pH, and where the system goes in your basement. Replies usually come the same day during business hours.

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