Its a 75 which is PLENTY big. I have a pair of clowns, a Firefish, and soon to be the Gramma. I guess I could add one more fish, I just don't want to reach that tipping point were the reef suffers due to too many fish.
Skimming, skimming, skimming. And of course water changes. Don't fret, we only have two fish in our 55gal now. I just caught that evil Yellow Tailed Damsel!