I'm still trying to catch 2 of the 5 crabs that came on my live rock 4 months in to my tank, not to mention the mantis shrimp that was a pain to catch, and red turf algae which is still in my tank. I did get a few goodies on it, though, rock boring urchin, multiple good macroalgaes. If I had to do it again, though, I'd use dry rock. Just my .02 Good luck with whichever route you take.