Refugium size

I've heard of people using 30gal as a sump/refugium for that size tank..

But of course, you want to use the biggest that you can. Find out how much space you have under your tank (If that's where you're putting it) and then find a tank around that size
 
As large as you can - if it were me, I'd probably do a 75g tank as a sump/refugium if I were doing it under the stand, or I'd get a larger pond tub if I were able to plumb it to my basement or into another room.
 
Back
Top