i was thinking of puting 8 or so bubble gobies into my 20gallon. woul di be able to do this. i have a bio whell(sp) filter in there right now no heat i yet. can i use gravel. any help wpuld be apprated(sp)
mine always did alright with gravel but it does make them harder to find. on the other hand if you have 10 you know at least a few will be in view at all times