I have a 75g FOWLR tank w/seaclone 150 skimmer and a marineland tidepool wet/dry filter... I'm currently growing macroalgae in the main tank but it keeps going sexual and screwing up my water. I want to add a refugium but am tossed on whether to use a hang on or sump based system...

Any suggestions on how to add, what type to add, and what the lower cost option would be????

Thanks!