Mar 5, 2012 #1 F fishyperson3010 Aquarium Advice FINatic Joined Oct 17, 2011 Messages 659 Location Surrey, United Kingdom WHat is a good filter for a 7 gallon tank?
Mar 5, 2012 #2 G GodFan Aquarium Advice Addict Joined Sep 10, 2011 Messages 4,245 Marina slim filters are good. You could also get a fluval c3 or a aquaclear 20.