I have been having to bump up the setting a lot lately and now I am at 100% with a 8 hour pump time.
DE filter 60 sq ft
Water temp 88 degrees
T chlorine 0.3
Free chlorine 0.0
PH 7.8 (ADDING ACID)
Calcium hardness 333
PB said to shock pool, add 35oz of commercial grade PHOSFREE and increase pump time to 12 hours. If this doesn't correct it he will replace Intellichlor which was just replaced 4 months ago.
Does this sound like a solid plan or is something missing?