I'm planning a 6 foot 125 gallon tank. I'd like to have a sump... not sure how large it will be yet... thinking in the range of 30+ gallons.
I'd like to supply CO2 via a needle wheel pump, which will be situated in the sump. So the outflow of the needle wheel pump will go directly to the tank.
The pump I have in mind is the Danner model 18. I was wondering if anyone has an opinion on using this pump in the sump on this size tank.