My 46gal probably has a bit of overkill in the water flow category. I am running an oversized wet/dry with a large return pump. I also run an AC
which also provides plenty of water flow and surface agitation. In addition, I am running a 200 gal
/hr PH and a 300 gal
/hr PH around the clock. When you drop flakes or pellets into the tank you can clearly see that there is current moving in many directions.
I have lots of lr
with many caves and crevices where fish & inverts can avoid water flow if they want to. So far I haven't noticed any problems related to the constant current in the tank.
Just my 2 cents