Quote Originally Posted by CarlD
I have NEVER heard of PolyQuat algaecide foaming--others can, but I never use them.
Yeah, it's the 10% stuff in the gallon jug. You don't want to use that.

10% = Foam
30% = No foam, but not a good of a deal per ounce as compared to the 60%
60% = This is what you want!

Michael