I was originally under the impression that these snails were in the tank for a long time. If they have been added within the last few weeks and are now dead, I think it’s a good possibility that the acclimation (or lack thereof), killed them. Most don’t realize that snails have to be slow-acclimated to your tank. A change in salinity will kill a snail…maybe not that day, but a week or two later. You need to slow drip acclimate snails when you get them. Some say for between 5 – 10 hours.
By the way, turbo’s are excellent algae eaters…and if this is a new tank (within six months), it’s coming!
Best of luck.
