How much rubble in a refugium?

[Mebbid]

I was wondering how much rubble people use in their refugiums. Currently I have 1/3 of my refugium dedicated to rubble, 1/3 dedicated to Grape Caulerpa and Chaeto, while the rest is for equipment. I'm wondering if I am using too much rubble.

Currently I have about 25 lbs of live rock in a 20g tank with another 10lbs of rubble in a 10g refugium.

 

[Grizz]

I keep about 12-15 lbs in my fuge also i have a hand full of hermits to help clean any detritus that may find it's way in there

 

[Mebbid]

I keep about 12-15 lbs in my fuge also i have a hand full of hermits to help clean any detritus that may find it's way in there

How big of a tank / fuge do you have?

 

[Grizz]

I have a 180 DT with a 55 gal sump the fuge is 12gl. half of which is full of rubble the other half has cheato