Watermom,

Seems like option 2 would be best. Get the CYA up with dichlor and switch to bleach.

Am I to assume everything else will fall into place (AK level, cloudiness, ph) ? Or are there steps seperate from the CYA process to manage those needs?
Thanks for the help!

Sam

PS: yes, the pump has a cartridge. I backwash only when flow is reduced or heavy algae load. Replace monthly, give or take.