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US Water Systems
Premium Fine Calcite pH Water Neutralizer Media
US Water Systems

Premium Fine Calcite pH Water Neutralizer Media

4.6· 61 ratings

Best price now

$73.88at US Water SystemsObserved Nov 4, 2026, 5:42 PM

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Our take on the Premium Fine Calcite pH Water Neutralizer Media

This is a 50 lb box of NSF-certified calcite (calcium carbonate) media used in backwashing filters to raise low pH and reduce acidity in well water. It is at least 95% CaCO3 with a bulk density of about 90 lbs per cubic foot, so a 50 lb box fills roughly half a cubic foot of tank bed. The best new price is $73.88 at US Water Systems as of November 4, 2026, and only one store lists it new, so there is no meaningful price spread to shop across.

Best forWell water with pH below about 7.0Homeowners with acidic, corrosive waterWhole-house neutralizer filter refillsCopper pipe and fixture corrosion control
Pros
  • NSF certified for drinking water use
  • High purity: 95% minimum CaCO3
  • Naturally occurring, near-white limestone
  • Consistent 90 lbs/cu ft density for predictable bed depth
  • Simple self-sacrificing media that dissolves as it neutralizes
Cons
  • Adds hardness, so a softener is usually needed downstream
  • Consumed over time and needs periodic topping up
  • Only one store lists it, so no price competition
  • 50 lb box covers only about half a cubic foot
  • Not for water already at neutral or high pH

Premium Fine Calcite pH Water Neutralizer Media prices at every store

  • US Water SystemsNew

    In stock

    $73.88Observed Nov 4, 2026, 5:42 PM
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Premium Fine Calcite pH Water Neutralizer Media price history

Lowest price we've seen: $73.88 on Nov 4 at US Water Systems. Tracked across 1 store since Nov 4.

What reviewers say

Ratings are strong at 4.6 out of 5 from 61 ratings, and buyers of this type of media typically report it does the job of lifting pH and reducing red water and corrosion. Complaints tend to be about fines and dust when filling and about how fast the bed is consumed on very acidic water.

Pros
  • Raises pH and reduces corrosion as expected
  • Clean, consistent media with little debris
  • Good value for a 50 lb box
Cons
  • Dusty when poured into the tank
  • Needs frequent replenishment on very low pH water
  • Adds hardness that a softener must handle

Specifications

Packaging Size
50 lb.
Quantity
50 lb.
Container Type
Box
Purity Percentage
95% min (CaCO3)
Impurity Profile
<2 (Acid Insoluble %), 3.0% max. (MgCO3), <0.2 (Moisture %)
Primary Component
Calcite
Physical State
Media
Chemical Type
Media, Calcium carbonate media
Product Family
Water Treatment Media
Function
pH Water Neutralizer Media, pH Balancing media
Primary Application
pH Balancing media
Chemical Name
Calcite
Molecular Formula
CaCO3
Density
90 lbs./cu. ft (Bulk Density)
Purity Grade
Premium, High purity
Meets Standards
NSF Certified
Certification
NSF Certified
Color
Near white
Manufacturer
US Water Systems
Country Of Origin
Northwest Limestone
Origin
Naturally occurring
Special Properties
Self-sacrificing, Naturally occurring material

Questions and answers

Is this worth it over cheaper generic calcite?
At $73.88 for 50 lb it is priced in line with other NSF-certified calcite. The certification and stated 95% purity are the main reasons to pick it over uncertified bulk media.
How much media do I need for my filter tank?
At about 90 lbs per cubic foot, a 50 lb box gives roughly 0.55 cubic feet. A typical 10-inch diameter tank needs about 1 cubic foot, so plan on two boxes.
Will this raise my water's hardness?
Yes. Calcite dissolves into calcium as it neutralizes acid, so hardness rises. Most homes with acidic well water pair the neutralizer with a water softener.
How often do I need to add more?
It depends on pH, flow and water use. On mildly acidic water the bed may last a year or more; on pH near 6.0 expect to top up more often. Check bed depth annually.
Does it work with a standard backwashing neutralizer?
Yes. It is designed as a bed media for backwashing calcite filters. Backwash at the rate your filter's manufacturer specifies to keep the bed clean.
When is the price lowest?
Only one store lists it new, so there is no sale pattern to track. The listed price was $73.88 at US Water Systems as of November 4, 2026.
Where is the Premium Fine Calcite pH Water Neutralizer Media cheapest?
At US Water Systems, for $73.88, as of our latest check.
What do buyers say about the Premium Fine Calcite pH Water Neutralizer Media?
Rated 4.6 out of 5 from 61 ratings.