hello i have a 12,500 gal. AG softswim pool with a problem. i cant figure out if it is algae or what i have added 10 oz. this week (since Sunday) of algaecide. my biguanide level and my clairifier levels are perfect pH is 7.5, my TA and CH levels are in ideal ranges. i have completely acid washed and changed the D.E in my filter 2 times this month. the problem is some kind of dirt in my pool in the bottom, like algae but when i brush the pool it comes up like dust, not in flakes. i brush the pool twice a day, manually vacuum twice a day, manually skim the pool 4 times a day with the leaf net. please help. the heat index is 101 for the rest of the week. i don't want to end up in the ER because of 12,000 gallons of **** i would post pictures but the website i saying the file size is too big.