Imerys (A8021-01) Calcite - Neutralizes Low pH or Acidic Water - 0.55 CF 50 Lbs.
Calcite Neutralizing Media (A8021-01) – 0.55 CF / 50 Lbs.
The Imerys A8021-01 Calcite media is a naturally occurring calcium carbonate designed to neutralize low pH water between 5.0 and 7.0. Its self-limiting chemistry corrects acidity just enough to reach equilibrium without overcorrecting, and it reduces corrosion-driven leaching of copper, lead, and other metals from pipes and fixtures.
Controlled pH Correction Through Dissolution
Acidic Water Enters Bed
Low pH water flows through 24–30 inches of 16x40 mesh Calcite media at 3–6 gpm per square foot.
Calcium Carbonate Releases Alkalinity
Acidic water dissolves the CaCO₃ media, raising pH and buffering the water to a non-corrosive state. The reaction is slow and self-limiting.
Backwashing and Replenishment
Periodic backwashing at 8–12 gpm per square foot prevents packing and reclassifies the bed. Media is replenished as it depletes over time.
Replenish as depleted based on pH and flowMedia Properties and Operating Conditions
| Volume | 0.55 cubic feet (50 lbs.) |
| Mesh Size | 16 x 40 |
| Effective Size | 0.4 mm |
| Bulk Density | 90 lbs./cu. ft. |
| Composition | 95% min. CaCO₃, 3.0% max. MgCO₃ |
| pH Range | 5.0–7.0 |
| Service Flow Rate | 3–6 gpm/sq. ft. |
| Backwash Rate | 8–12 gpm/sq. ft. |
| Bed Depth | 24–30 inches |
| Freeboard | 50% of bed depth (min.) |
| Backwash Expansion | 35% of bed depth |
System Integration and Considerations
The Imerys A8021-01 Calcite media is designed for use in upflow or downflow neutralizing tanks with a gravel support bed and works with Clack, Fleck, and other standard control valves rated for pH correction. Because the dissolution process raises calcium levels, a water softener downstream may be necessary to manage increased hardness. This 0.55 cubic foot bag is suitable for residential and light commercial applications treating water with pH between 5.0 and 7.0.
Calcite Neutralizing Media (A8021-01) – 0.55 CF / 50 Lbs.
The Imerys A8021-01 Calcite media is a naturally occurring calcium carbonate designed to neutralize low pH water between 5.0 and 7.0. Its self-limiting chemistry corrects acidity just enough to reach equilibrium without overcorrecting, and it reduces corrosion-driven leaching of copper, lead, and other metals from pipes and fixtures.
Controlled pH Correction Through Dissolution
Acidic Water Enters Bed
Low pH water flows through 24–30 inches of 16x40 mesh Calcite media at 3–6 gpm per square foot.
Calcium Carbonate Releases Alkalinity
Acidic water dissolves the CaCO₃ media, raising pH and buffering the water to a non-corrosive state. The reaction is slow and self-limiting.
Backwashing and Replenishment
Periodic backwashing at 8–12 gpm per square foot prevents packing and reclassifies the bed. Media is replenished as it depletes over time.
Replenish as depleted based on pH and flowMedia Properties and Operating Conditions
| Volume | 0.55 cubic feet (50 lbs.) |
| Mesh Size | 16 x 40 |
| Effective Size | 0.4 mm |
| Bulk Density | 90 lbs./cu. ft. |
| Composition | 95% min. CaCO₃, 3.0% max. MgCO₃ |
| pH Range | 5.0–7.0 |
| Service Flow Rate | 3–6 gpm/sq. ft. |
| Backwash Rate | 8–12 gpm/sq. ft. |
| Bed Depth | 24–30 inches |
| Freeboard | 50% of bed depth (min.) |
| Backwash Expansion | 35% of bed depth |
System Integration and Considerations
The Imerys A8021-01 Calcite media is designed for use in upflow or downflow neutralizing tanks with a gravel support bed and works with Clack, Fleck, and other standard control valves rated for pH correction. Because the dissolution process raises calcium levels, a water softener downstream may be necessary to manage increased hardness. This 0.55 cubic foot bag is suitable for residential and light commercial applications treating water with pH between 5.0 and 7.0.
Original: $99.00
-65%$99.00
$34.65Description
Calcite Neutralizing Media (A8021-01) – 0.55 CF / 50 Lbs.
The Imerys A8021-01 Calcite media is a naturally occurring calcium carbonate designed to neutralize low pH water between 5.0 and 7.0. Its self-limiting chemistry corrects acidity just enough to reach equilibrium without overcorrecting, and it reduces corrosion-driven leaching of copper, lead, and other metals from pipes and fixtures.
Controlled pH Correction Through Dissolution
Acidic Water Enters Bed
Low pH water flows through 24–30 inches of 16x40 mesh Calcite media at 3–6 gpm per square foot.
Calcium Carbonate Releases Alkalinity
Acidic water dissolves the CaCO₃ media, raising pH and buffering the water to a non-corrosive state. The reaction is slow and self-limiting.
Backwashing and Replenishment
Periodic backwashing at 8–12 gpm per square foot prevents packing and reclassifies the bed. Media is replenished as it depletes over time.
Replenish as depleted based on pH and flowMedia Properties and Operating Conditions
| Volume | 0.55 cubic feet (50 lbs.) |
| Mesh Size | 16 x 40 |
| Effective Size | 0.4 mm |
| Bulk Density | 90 lbs./cu. ft. |
| Composition | 95% min. CaCO₃, 3.0% max. MgCO₃ |
| pH Range | 5.0–7.0 |
| Service Flow Rate | 3–6 gpm/sq. ft. |
| Backwash Rate | 8–12 gpm/sq. ft. |
| Bed Depth | 24–30 inches |
| Freeboard | 50% of bed depth (min.) |
| Backwash Expansion | 35% of bed depth |
System Integration and Considerations
The Imerys A8021-01 Calcite media is designed for use in upflow or downflow neutralizing tanks with a gravel support bed and works with Clack, Fleck, and other standard control valves rated for pH correction. Because the dissolution process raises calcium levels, a water softener downstream may be necessary to manage increased hardness. This 0.55 cubic foot bag is suitable for residential and light commercial applications treating water with pH between 5.0 and 7.0.
