Nasarius snails dying?

[Maebh]

I've one blue legged hermit and two nasarius snails in a 15 gal. Yesterday one of the snails started acting really odd, writhing, not burying himself and going on his back. The other snail was fine today and is buried in the sand atm. I've seen other people say it could be copper but I don't have a test for that.
My parameters yesterday were ph-8.2, salinity -36, nitrites-0, nitrates-10, kh- 3meq/l, ammonia-0/far closer to 0 than to 0.2 colour wise.
Hermit crab has stopped hovering ands on the other side of the tank now.

 

[Idech]

Your sand is very white. Do they have enough to eat ? Do you feed them ?

 

[Maebh]

Your sand is very white. Do they have enough to eat ? Do you feed them ?

I do feed them around once a day (though I was told to start feeding them more which I'll do). I've put him in a separator with a bit of an algae wafer, but no response.

 

[ISpeakForTheSeas]

Yeah, from what I recall with your other recent threads, I'd be concerned that they're either starving or that something in the environment is slightly beyond their toxicity threshold (meaning that it seems to me like it could be something like copper - or another toxin - at a level that's high enough to kill them slowly, but not right away).

I'd say to try feeding the rest a bit more and see how they do, and if they die over the next few days too, then I'd seriously check for potential toxins in the tank.

 

[Maebh]

Yeah, from what I recall with your other recent threads, I'd be concerned that they're either starving or that something in the environment is slightly beyond their toxicity threshold (meaning that it seems to me like it could be something like copper - or another toxin - at a level that's high enough to kill them slowly, but not right away).

I'd say to try feeding the rest a bit more and see how they do, and if they die over the next few days too, then I'd seriously check for potential toxins in the tank.

perfect, thank you!

 

[Maebh]

Just an update; he's still alive, actually acting a bit better!

 

[Maebh]

Update: sadly got worse over friday and saturday morning he died :,(. Everything else is going well two days later.

 

[formallydehyde]

I had the same thing happened with my nassarius snails and in retrospect I think it was copper in my water. I recently noticed all the shiny copper water pipes in the basement of my building. No other snails seem to have an issue but maybe nassarius snails are just incredibly sensitive to it for some reason.

By the way, AFAIK they're primarily carnivorous so algae wafers aren't the best for supplementation but I doubt it died of anything starvation related regardless.