Some kind of polymer additive you don't want in your pool. Last year it was the splashless stuff causing people's pools to foam up like Mr. Bubble.what is the cloromax?
You had me excited until your said the CC was at about 1. I would suggest checking that CC again. It needs to be 0.5 or less. That's your last requirement since you passed the OCLT and your water is clear. We want to make sure your pool isn't still working hard to oxidize excess organics.Am I done with the SLAM?