I been trying now for 3 days to drop my FC to zero because I want to do a absorbic acid treatment. I turnded my swg off 3 days ago n let the pump run 24/7.
I did put a qt of poly-60 in too. My cya is around 60.
My FC is 6 right now. Dropped only .5 so far. It's been cool in the low 70s-mid 60s