View Full Version : Size of sump/refugium compared to main tank?

01/11/2007, 01:46 AM
Is there a general rule to follow when determining what size your sump/fuge should be compared to your main tank?

01/11/2007, 02:22 AM
No rule! But the idea is to have it as big as you could to maximize system's water volume. So, if you can have 1000 gallon sump - do it :)

01/11/2007, 02:29 AM
To have an effective fuge it should be no less than 20% of the main tank in my opinion. The sump can be any size however.

01/11/2007, 03:06 AM
Here is a good 3 part article on sumps:

And here is a good read on Refugiums:

01/11/2007, 06:40 AM
I have a 55 gallon display w/ a 55 gallon sump/fuge. The enterance to it is an 8 inch long piece where the overflow water runs into a bunch of rock rubble, then overflows into the skimmer, then over to the fuge part (just cheato), then return. I don't get exceptional cheato growth because of not being in a high flow "tumbling" area, but it grows fast enough. Tank has been stable since day one. I got a few patches of hair algae a few months back, but that I believe was due to switching to TM Pro salt. I've since then switched back to Reef Crystals and the tank is starting to look alot better.