I had one for awhile. Ate every shrimp in the tank, a Cleaner, Humpback, Coral Bandit and lots of Ghost Shrimp I would catch to toss in there.

I wouldn't trust it, plus you have to tear down the tank to get them out as they make thier home way down under the rocks.

Whe I swapped everything over to the 125g he went bye bye.

Mark