Can a HOB filter and Canister do more bad than good

[drewdog82]

I currently have an eheim 2215 canister filter running on my 55. I also have a coralife SS65 skimmer on my tank. If I were to add a HOB refugium, would their be any point to still running my canister filter. I would still keep it to occasionally run carbon or a poly-pad, but other than that are their any real benefits to having one??? Also, it seems that they can build-up impurities very quickly--and can't that do more harm than good??

 

[zanoshanox]

Yes, there would be. The more filtration the better. And that is your mechanical filtration (eheim), and i'm guessing your fuge would jusy have microalgea? Althought Im a little confused as to if you want a HOB filter or refugium? Either way I would say keep the canister running too.

 

[cowfishrule]

what harm could it do?
its more water movement.
and if you dont really need it, just fill it with some lr rubble and let it run.