Fluval 404 question
I am working on setting up my filter on a 75 gallon tank. The manual says that in order to start the filter, the ouput needs to be above water. Hence, they show the ouput being placed just over the lip of the tank. However, from what I understand, one of the advantages of the canister is that there is less surface agitation. As such, is it OK to place the output lower in the tank?