Just add to skimmer and walk away!
Swimsafe Crystal Cube Water Clarifier
1 cube treats a average pool for 2 weeks
-Non Toxic
-No Copper or metal salts
-Phosphate remover
-Reducers build up of organic and inorganic sub-micron particles, including algae spores
-Increases sand filter efficiency and acts as filter aid
-Subtitle for chlorinated and salt water pools
