Hi all,
Question, I have been thinking about my external canister filter Tetratec EX600 which is in the cabinet below the aquarium and so lifting I guess just under a meter. The flow rate is not great from the filter at this height although I cannot find a graph predicting what it might be. I am not having problems but wondered what your views were on whether contact time or flow rate is better for chemical media, in my external I am running CPE and a huge bag of Rowacarbon. The filter itself is causing no issues my nitrate is zero and it stays very clean. Would you think about altering flow rates etc or do you think the longer contact time for the water is beneficial.
Apologies if a stupid question having an OCD evening !
Best wishes
Paul.