Tucker if you go Hummu I would say cheap and colorful damsels in the event the Hummu gets a little ignorant,not to mention they are small.The 75 is no good for the life of a hummu but close in dimension to a 90,which could suffice for definately more than a year IMO.They are not fast growers as in some of the other trigs so rapid growth rate is not an issue.A 2" Hummu will take a while to outgrow a 75,and as I said before add and maintain nice corraline encrusted rock,and the biggest Undulated trigger you can get your hands on.Our Hummu makes a great tankmate with our Jeweled Toby in our 100GL,they swim together and rub on each other,I think they're in love!