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I really don't think you would be very happy with this type of crab. They are very messy and quite taxing on the biofilter. You would need quite a large system to maintain it. You would also not be able to keep much of anything else with it. They are increadibley destructive and will eat just about anything not nailed down.
There are many attractive species of mobile inverts that you could easily set up a tank for instead. Smaller, less waste producing and in many cases can be kept in a wide variety of types depending on tank size.
Cheers
Steve