invert only tank, or something else?

ok so right now i have a 55 gallon reef, (soon to be 75) and with a reef, and inverts and such there is limits to what one can have, so i have a 29 gallon oceanic cube, just sitting in my garage, i want to put it iun my room, and make some sort of a cool tank, i could make another reef, since i already ahev the lights, but i already have one, so i am thinking of an invert only, like a cbs tank, or i have always thought the arrow crabs were the sh** ahha!!
um any ideas??? of what could fit in there?
i wanted originally to do like a fish only but all the bad A** fish need like 150 gallon fish only tank ahha, or if any one knows any cool fish like a darf lion or something that would be good in a 29, or any cool inverts, thanks for the help all!

 

do a cleaner shrimp tank. when you stick your hand in, they will all climb on your hand and clean it!

 

thats a cool idea! An invert tank but just to keep it a little lively you could add some really peaceful fish like pipefish and dragonets, as there will be nothing to compete for the food with.

 

oh oh even better get a frogfish in a reef!! ooo yeh and stick some mollys in the tank for him to eat!! oooo i want to do that!!

 

I Have Two Words MANTIS SHRIMP !!!!! They are awesome and so dangerous to everything else they need thier own tank. 8)

 

I heard mantis shrimp are very dangerous and they could actually break the glass walls in your aquarium, sorry crabby jim I wouldnt recommend. There are definetly way cooler inverts you could do. Harlequin shrimp are pretty awesome just make sure you through a chocolate starfish in there because thats thier diet.

 

They said they had a nano cube I thought that was an acrylic tank The shrimp is not going to break acrylic.

 

Oh, and I havent seen any cooler invert than a rainbow mantis shrimp .

 

no its just a glass 29 tank, um yee i dont think the mantis, they freak me out ahhahah, i was thinking like arrow crab or like cbs or idk, how many arrow crabs could go in a 29/?

 

They don't callem' "thumb splitters" for nothing....LOL
But they are cool'..