Triggers?

Liveaquaria and Bluezooaquatics have good profile info. Here's a link to the Liveaquaria link for Humu Triggers - I agree they're awesome - but, they will need big water, although I'm not sure how fast they grow, so a 55 or 75 might be good for awhile. And, they are not reef safe, meaning they will nip at corals. So, if you plan to invest in corals, you don't want a trigger.
http://www.liveaquaria.com/product/...pcatid=253

 

Not reef safe generally means not good with corals. Weather the coral is "established" or not, IMO you don't want a fish rearanging or trying to rearrange them. Have never had one of these guys, but I would avoid them unless you are going fish only.

 

I believe they will eat corals. I was snorkeling in HI last month and watched a 12" huma trigger happily grazing on them...

 

I currently have one of these guys and they are not reef safe. I think mostley they are not invert safe,so since most reefs have snails and hermits that is why they dont recommend them for reefs.i put up a 125 and devided the tank with a plexi-panel to keep the two sides from eachother on one side i have a humu as well as a pinktail on the other i have corals and inverts and less aggressive fish. so far its working very good

 

Most triggers will nip at anything hard to wear their teeth down. My undulated trigger will literally pick up and move anything in the tank around to his liking and he will bite and chew on anything in the tank. If you're planning on having corals, I would stay away from all triggers accept the pink tail, blue jaw, and sargassum triggers. These three will be just fine in a 75 gallon for a long time and will also not disturb the corals like others would.

 

I've had my picasso for about a year and will vouch for their tendency to rearrange the rockwork. I've been able to keep some nerite and turbo snails with him but crabs don't last long. He's a very messy eater so be sure your system will handle the bio load. They have a great personality and are slow growing but after all is said and done they are still triggers.

 

They are fine with soft coral but will devestate all stony corals. They will kill any fish that cant hold there own two. I wouldn't get one unless your going fish only with a few soft corals.