Aloha all, I have the Hayward 1200 cartridge filter system which is way large for my system. I clean it and in a few hours out put is down to a trickle again. I went and bought a new cartridge and it is pumping with great flow and water is much cleaner. Soooo what in my cartridge cleaning methods is wrong?
1: there is a lot of brown stuff on the pleats that I clean off with a pressure nose/nozzle that is the brass kind described here (shoots 40 feet or so). I get all the stuff off
2: then is there a coating of maybe an oil (from body over time) that I do not see that is still present that I am not removing with plain water?
3: If so, then what sort of chemical do I use to "cut" the contaminants? I see a lot of suggestions here
4: What is the brown stuff?