IF Internal Filter Foam Pack

Finally a foam pack that actually lets water flow freely instead of clogging up within a week. I measured the outflow after a month and it's still strong, so the material really holds up over time.

My old sponge was literally falling apart, but these new foams are much denser and hold their shape better. I swapped one in and the flow rate from my internal filter noticeably improved right away.

Needed to swap out the old worn sponge in my canister filter, and this foam pack was the exact right size and density for the internal unit. Water flow is noticeably stronger now that the foam isn't clogged.