Originally Posted by AirborneForever
Maybe some of the forum members here can help me out. Ive been googling around and havent found the answers I need. I want to use an extra 10 gallon aquarium to make a refugium in a spot I made into the bottom of my aquarium stand. For the life of me I cant find out what to use to pump the water down and back up into the main tank. So, hopefully someone here can help me so I can do this project. The refugium will sit 23 inches under the aquarium, plus the height of the tank, which is a standard 55 gallon.
do not pump out and then pump back in, if one pump fails your getting a flood.
i personally would drill the back of the tank and go with a glassholes overflow but a hang on overflow would work too. i just personally like the drilled tank because i dont have to worry about the overflow ever failing.
another option might be to look into a bigger sump where you can include a refugium section instead of having your sump and fuge seperate.