Eheim Fix - 細過濾棉

The water in my 20-gallon has that crystal-clear look after just a couple days, and this wool catches the tiniest floating bits my old sponge missed. It’s soft enough to pack into the filter without clogging, which is exactly what I needed for the final polishing stage.

My pleco kicked up so much debris that my water was always cloudy, but the fine wool in this pack caught every last speck within 24 hours. It's super easy to cut to size and stuff into my HOB filter without any fraying.

After running this in my canister filter for a week, the tank's water sparkles like it's brand new. It catches so much fine dust that my mechanical media stays cleaner much longer.