Yes, I have heard that on margarita snails. Question is, why the heck are they listed then. At least a larger amount of them are surviving.
However, as first stated, the astrea snails I purchased are almost all gone. Even the ones I flip back are just lifeless. The half dozen trochus are all fine.
Between the snail losses and my 3 peppermints not making it very long, its really a depressing invert order.
On a good note, the tuzedo urchin did a great job on some of the red turf algae I have. And my pair of brittle stars learned in a hurry to come up the side to get some pellets for lunch.
Without the sand bed now however, I may have to sell one.