My first post!
After recently hooking up a Hayward propane pool heater to the system, I start getting black, smudgeable marks above the water line, the white hose from the skimmer has turned yellow, and today I replaced the filter and noticed it had turned blue. Is this from copper? or something else?
Thanks for your help!
Intex 16'x48" round UltraFrame, 2500 g/per hr pump upgrade, Intex Skimmer, Krystal Clear SWCG, Hayward above ground propane pool heater, Intex magnetic wall light, Flex Head vacuum head with adapter to pool intake.