Go with another sponge, or better yet ... IMO
... a wad of 100% Polyfill to really give the water good final polish. Actually, last night my Fluval 404 pumped it's last water. After trying in vain to keep it going for the last week (actually been the last couple of months)
had to go with a Fluval C4 HOB
. So overnight I went from a Canister to two (had an extra marineland) HOB
's on my 75gal.
So what I did was I took the filter sponges and ceramic rings from my 404 and stuffed the two HOB
's. This morning, my fish and bamboo shrimped looked the same as always.
75g Planted Barbs Denison, BlackRuby, Tiger, Albino Tiger, Green Tiger, Cherry, Gold, Checkered, Odessa.
NonBarbs Cardinal, Neon, RummyNose, Bloodfin Tetras, Z. Danios. 1RTS. Amano, Bamboo, Ghost & RCS. 20g Long Shrimp Tank RCS, Tiger, Amano.