the refugium and this could be like a freshwater plant turf scrubber?
< I would plant the tank heavily and use co2 injection and appropriate lighting. Use a canister filter or two as needed to provide circulation. Then check the ammonia, nitrites and nitrates. If properly done, I think that you will find that there are no readings. A wet dry filter will rid the co2 out of the water that is needed for the plants. The plants act as a filter as well as being pleasing to the eye. You could create an overflow system that would overflow the tank down to the refugium and then pumped back up to the main tank.> or I could use a DSB, I was going to use a powerhead so I could utilize the venturi to push the return flow from one end of the tank like the left side.
