Blueprint for a 20g Long sump with refugium

[mmulisha84]

Im looking for some specs for a 20 Long sump, the current sump I have doesnt have room for a refugium, I have the tank, sock holders, just looking for plans or ideas of what others have done with there 20 Long.
Thanks

 

[Fish man]

go on YouTube and search "20 long refugium diy" There's a bunch of videos just on 20 long's