i found a used stand and canopy today, and i found a good deal on a new 210 tank which will be here in september. Now i need a sump! im looking for one that has all the compartments i need like for skimmer etc... But i also want it to have a large built in refugium like upwards of 30 gallons. Where do i find something like that, or does it have to be custom made? Is 30 refuge too big? Im totally new at this but i want to do it right the first time!