sump for 40 gal

[milkshake]

What is a good size sump (refugium) for a 40 gal? My tank is all
hang on. Can someone point me in the direction on how to setup a refugium for a hang-on system?

[lcheesman]

As a food source for copepods, amphipods and other life a refugium can be much smaller than the main tank to give benefit. In your case 10 gallons would probably suit. However, as an effective nutrient removal system you may as well get a 20 gallon....IMO this would allow a large colony of your chosen algae if thats the way you are going. If you have space for a 30 or 40 gallon even better. Remember you are increasing the total water volume thus increasing stability within the system.

Lee

[818]

Ditto on teh 10 gallons. It realy depends what u want to throw down there like a skimmer pump, heaters, etc?

sam