SpaChoice Liquid Calcium Hardness Increaser 1-Quart (4-pack)
Liquid calcium hardness increaser for hot tubs and pools. Increases hardness; 1 ounce per 500 gallons raises hardness by ~10 ppm. Customers note ease of use and good quality
Highlights
- easy-to-use liquid format
- clear dosing guidance
- helps maintain calcium hardness
Pros
- easy to dose
- good quality
- dissolves with ease
Cons
- mixed views on value for money
- dissolving properties receive mixed reviews
Best For
Features
- Target hardness range for spa water is 200-400 ppm
- Each 1 ounce treats 500 gallons, raising hardness by ~10 ppm
- Liquid formulation offered as an easier-to-use option over granular products
