Eheim MECHpro

The hollow ceramic structure actually does exactly what it promises—my canister filter’s fine pad stays clean for a full week now instead of clogging every couple of days. Traps the big gunk right at the start, and it rinsed off easily after a month in the sump.

Cleaned off months of gunk in my canister filter within a couple days, and the water flow is noticeably stronger now. The coarse ceramic material really grabs the big particles before they can clog up the bio-media.

These hollow ceramic rings settled right into my canister without floating away, and the water is noticeably clearer after just three days. Perfect for catching the big waste before it clogs up the bio-media.