I have an aquarite SWG with a pentair clean and clear plus cartridge filter for my 50,000 litre inground pool. After i run a superchlorination function i see fine white particles in the bottom of the pool around the seams and pooling up in other areas of the pool bottom. What and why is this?? I'm guessing that it is just the salt but why does it seem to become "undissolved" after superchlorination?? Or is it something else??