Why are you looking at upgrading? Maybe there is a better alternative than upgrading your skimmer. I have the same skimmer only smaller (super skimmer 65) in a 30 gal sump/fuge for a 77 gal main tank. (fish and reef setup) I find this one is more than sufficient. I've left my tank for months without water changes (on occaision) and still had very low nitrates...no ammonia...no film on the top of my water...etc... Although the super skimmer doesn't rate very highly I don't see myself ever upgrading... though I've seen some much nicer units I've been tempted to buy just based on esthetics and ratings.
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