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Review on 🚿 Poly Guard Replacement Cartridge for Crystal System - Compatible with Whole Home Water Filters - Scale and Rust Prevention - Hard Water Treatment by David Holmes

Revainrating 5 out of 5

a good cheap alternative to a water softener.

works great with hard water. helps reduce the amount of calcium and sediment. Faucet aerators no longer clog through plumbing. Use this on a hot water line to prevent hard water from quickly building up in the water heater. The water heater also works better.

Pros
  • Not just useful for its intended purpose
Cons
  • boring packaging