How do you clean a sight glass on a Hayward Vari-Flo filter. Galss has turned green after a an algae bloom 2 weeks a go.
Is the glass removable I tryed to twist the glass and it does not turn. The water tests good, chlorine, PH and water clarity are excellent. I vacuum every other day and then backwash.
Is the glass removable I tryed to twist the glass and it does not turn. The water tests good, chlorine, PH and water clarity are excellent. I vacuum every other day and then backwash.