I have noticed my Ph has dropped over the past two days it was satying around 7.4-7.5 and yesterday it had dropped to 7.2 so I added 2lbs 14oz to get it to 7.5 I come home today and check it and it is at about 7.0. Any one have any ideas?
My levels are
FC-4
CC-0
PH-7.0
T/A-110
CYA-30
Temp-91...