I agree. I use bio media for two main reasons: 1) I can rinse my sponges under high pressure tap water, cleaning them thoroughly, without caring about the bacteria in them. 2) Over time the sponges break down from either me wringing them out when cleaning or, In some cases just getting compressed in my canister filter. I can just chunk the old ones willy nilly and replace them with fresh, effective ones again with complete disregard for the bacteria I'm murdering. As always, you do you.