mohawk,

I believe the stuff in my pool is some sort of silt/pollen as well. After shocking heavily for 4 days this brown silty substance still finds its way to the bottom the day after I vacuum.

I may take apart my sand filter (which has never been done) to visually inspect the sand and see if any maintenance is needed there. Otherwise I may try a filter sock or else I will just live with it and eventually the vacuuming and backwashing will get it out.

BTW, maybe this is just more pollen, but lately I can see a bunch fine white particulate on the surface of the pool. You can only see it if you catch it at the right angle. This is different than the intial pollen explosion, becuase then I was getting a green film on everything. The cars would be green. Now I am not seeing this green film on the cars, but this white particulate is clearly getting into the pool.

Oh well, its not really effecting the pool any, in fact it was a great weekend of swimming.

Riles