high chlorine or lower chlorine + polyquat

[CarlD]

If you don't have an SWCG then you should be keeping your FC between 8 and 15 with a CYA of 100. You cannot run a lower FC level by relying on Polyquat, though it will help keep algae at bay.

Polyquat's good at keeping algae from starting, and, if you can't keep FC up it can help.

[rdbrya1]

great, thank you!!