The easiest way to enjoy crystal clear water. No handling or complicated dosing systems required. It has never been easier to enjoy crystal clear water. Ideal for all pool types, except ones with cartridge or diatomaceous earth filters. The single dose gel blocks will enable you to add the exact amount of the product with next to no effort. CrystalBlock collects colloidal particles and algae spores so that they are filtered better.
• Increases filter efficiency.
• Helps keep your pool water crystal clear.
• Improves the efficiency of disinfectants.