Originally Posted by jaysee
eh, betta or neon, it's all the same.
I have used topfin10's on my quarantine tanks in years past. Quite honestly, there is absolutely no reason why the filter cannot handle the bioload of 6 neons. I have quarantined groups of fish with a much larger bioload than that. I know it's not exactly what you want to hear, but I think there's something else causing the problem that needs to be addressed. Do you have decaying plant matter in the tank or something? Is the filter baffled at all?
I don't mind hearing that, I just want to fix the problem! I may just add a sponge filter for fun anyway...
The topfin does only fit a pretty small piece of sponge in there, and the bag of biomax made for the aquaclear 20. It doesn't seem like much to me, however, I am pleased with the design of the media box on the TopFin. How do we know how much surface area a given bioload needs anyway?
There are no live plants in the tank and the filter is not baffled.