mguzzy
Gold Supporter
OMG! If THAT is clean I'ma uh uh.. Monkeys Uncle.. wait.. I AM a monkey.I want to thank the member who told me to get to know my equipment. You made me realize I couldn’t trust the pool guy said my filter was clean. That does not look clean. Besides the one white one I’ve been spraying

Those look nasty enough that you might want to give them a TSP bath and an Acid wash... Here read this:
Cartridge Filter Use and Care - Further Reading

I bought some BIG plastic bins and I was able to submerge my cartridges in them. I've also seen people use plastic garbage cans.