I searched the forums but didn’t see this. If I missed it, feel free to point me to an applicable thread.
PooL: 15,000 gallon Diamond Brite surface
Chemistry:
FC 3.0
CC <.2
CYA 30
TA 90
CH 260
Phosphates 150
I use a Taylor drop test. (K2006)
Clear water, new filter cartridges.
I have algae...