Tom,

In regard to adding another canister filter - are you saying that the one Eheim is not enough for this bio load/tank size or adding one as a way of adding agitation? If it is that I need more filtration, would one larger filter alone, like a Fluval 405 or equivilant, do it? The tank does have 50 tetras/rasboras and a few assorted ancistrus in it, but water quality seems good.

Thanks for the help,

-Russ