My fish store gave me couple of options for me, My sump size is 30 gallon, If I want to go with a G3 or a G4 skimmer, I will not able to set up a refugium.
The other option go with a G2 skimmer, which can be fit into a the drain chamber and use the second chamber as the refugium.
Whats the best set up to go with? Apprecite any advise?