I have been having to bump up the setting a lot lately and now I am at 100% with a 8 hour pump time.
Pool:
13500 gallons
PT Plaster
Whisperflow 1.5hp
DE filter 60 sq ft
IntelliChlor 40
Water temp 88 degrees
T chlorine 0.3
Free chlorine 0.0
PH 7.8 (ADDING ACID)
TA 120
Calcium...