Originally Posted by Joey P
Right now, I have a 40 gallon breeder with 9 fish (and possibly 5 more small fish in the next month or so) and an Aqueon 55/75 HOB
filter. For no particular reason I was thinking of adding a canister. My levels are good. In the month or so I've had my tank I've never seen anything spike or had any real reason to think I need help with the filtration (other then maybe to stay ahead of any issues). I know you can't really over filter, but I also figure that at some point you're not really adding anything extra.
So, splurge on a Fluval 205/206 or save the $100?
In your case, no, there's no need to get a second filter as it sounds like your's is adequate. Second filters come in handy when one is not enough, either by it not being rated high enough, or you have very messy high bio load fish.
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.