My numbers are as follows

FC - 8
CC - 0
CYA - 35-40ish
TA - 110
CH - 220

I raise my FC to 10 each evening because it is so darn hot here (outside Galveston) and I am not here to dose mid day if FC falls below 4.

Day before yesterday I noticed yellow dust on the bottom of the pool. Vacuumed, brushed and raised my FC to 10 again. Water started looking a little green.

Same situation the next day. Just lightly green.

This am around 11am this morning FC was 9.5 with no CC but my ph was sky high. Added acid. Level only dropped to 8 today but my water is even more green and there is MORE yellow dust on the bottom.

How can I have algae with these numbers?