View Full Version : Cerith snail problem

03/04/2017, 06:46 AM
I've had an explosion of cerith snails in my 90 gallon tank. I'm guessing a few thousand. I'm trying to pull a couple of hundred every night but it is slow work. I know cerith snails are supposed to be safe but is it possible that in huge numbers they could start to eat corals? They are always crawling on my zoas and acan flesh. Some of my zoa frags are losing space and shrinking and seeing little cerith snails hanging on their stems makes me wonder. I don't have any crabs and I have pulled all of my fish to go fallow and finally get rid of ice. I've seen zoa eating nudis before and I can't spot anything like that on them.


03/04/2017, 10:21 AM
Can you post a picture of these snails? If they are in fact Cerith snails then they should be of no concern to your corals. I'm not sure how your removing them, but a siphon, a bucket and a net can work wonders sometimes. Maybe trade them in at the LFS for some credit.

03/04/2017, 12:16 PM
They are about half the size of an eraser head so it is hard to get a picture where you can see much. This is the best I could do.

03/04/2017, 08:06 PM
That's a cerith. I can't imagine they would eat corals.

03/29/2017, 03:52 AM
I'll take them from you if you don't want them... I'm looking for some for my 90. Let me know.

03/29/2017, 12:22 PM
Try dropping food in: snails are omnivores leaning to herbivores, but if starving, they may resort to unusual things.

03/29/2017, 12:27 PM
You must have a spotless sandbed.