I had great results - but emerald crabs are picky little buggers. I've had probably five or six emerald crabs and only one of two were really interested in bubble algae. They have been inconsistent at best, but in the end, they did solve the problem for me.
At the time we had a member of the reef community, Beverly, was also at her wits end with the stuff. I gave her my ‘Voracious Valonia Eater’ to little avail in her tank for some reason…. Go figure, eh? She ended up boiling her live rocks on the stove in desperation – which did eradicate the problem.
Interestingly enough, the boiled rock did come “back to life” relatively quickly.
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Have a good one!
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