Jolly Gel Swimming Pool Flocculant Sand filtration improvement NOT FOR USE WITH CARTRIDGE BASED FILTERS! For spas and above ground pools with cartridge flitration, please see: Spa 'Bright & Clear' Water Clarifier JOLLYGELL The only proven flocculant to work with san and zeolitic filter media, Jolly Gel removes algae spores and reduces chlorine consumption.  Placed in the pump or strainer basket it dossolves to place a porous membrane screen over the filter media, removing fine particles. This is the solution for solving cloudy water problems.  Backwash your filter first to eliminate other possible causes.

What is Flocculant?

The filter will remove most of the larger particles in suspension in pool water.  However, tiny particles pass through the filter without being trapped.  This causes cloudy water and sometimes forms fine debris.  Clarifiers and flocculants remove these fine particles from the water to make pool water crystal clear.

To put it simply, flocculant deals with unwanted particles that would normally be too small to be removed the the filter alone.  Flocculants work by means of sticking to the particles thus enlarging them to a size that sand filters can "catch" and remove them, or by means of creating a porus membrane which is more dense than the sand in your filter.