Hello,

I just got my pool earlier this year and it is been trouble free so far thanks to all the help I've gotten here on how to maintain it.

The last few days I've noticed on the floor of the pool (which is a 22' AG Intex pool) that in spots there is a dark yellow or brownish stuff. I can run my foot over it and it comes right up almost like a powder but will settle back down eventually when no one is in the pool.

Is the start of some kind of algae? We haven't had a really hot summer until just this past week. Now it's in the high 90's even broke 100 yesterday. The water is 86 already this morning.

I keep my FC at 1-3 ppm and check it every single day and add bleach as needed. My PH is at 7.6 right now, probably bordering on 7.8. I checked my CYA yesterday for the first time in a while and it is coming up at 35. It was around 50-55 last time I checked probably a month and a half ago. I threw in 1/2 bag of dichlor yesterday evening to get the CYA up a little, but not sure if I even needed to do that.

Any advice of what this may be? I skim my pool twice a day manually to get any bugs/pollen off the surface, run the pump at least 8 hours a day, and vacuum a few times a month when needed but I really don't much on the bottom of the pool.

Thanks!
Jewlz