jsnowalaska
Junior Member
I drained my water heater today as part of winterizing and noticed a good amount of darkgreen, almost black, algee coming out. I haven't rv'ed since June so I guess I should have drained it sooner. My question is what now? do I need to replace the heater or is there something I can flush it out with next spring? Will sitting all winter in below freezing storage effectively kill any algee?