Red Onion Nerite On Its Back.

I'd had a couple of nerites in quarantine with the shrimp, one to remain in the shrimpery with the shrimps and the other so I could ensure it was fish disease free before I posted it off to somebody. I moved them into the shrimpery with the shrimps over the weekend and I've just found it on its back with a partially open trapdoor which doesnt close when I tap the shell.

First thing I did was to test the water and there's no ammonia but a trace of  nitrite 

I need to find the other nerite now and do a water change.

Could the onion snail have just reached old age? Nothing lives for ever after all.

A tentative sniff and  how can something so small smell so bad. RIP Mr Onion. You weren't kidding about that smell Sue, it's haunting my nose!

I think I triggered a mini cycle in the shrimpery when I rinsed out the sponge. I'll wait till things settle then add some nerites back in.

That smell should be bottled and used as an offensive weapon!