One eye is covered in white something, otherwise seems fine, swimming happily and eating. Any idea what is could be? Other neons are fine. Hopefully change and test the water tomorrow.
Also, any ideas how I can get rid of empty snail shells? Finally managed to get rid of most snails, only got very few small ones left which haven't grown for weeks but when I clean the sand with the suction thing the shells don't come up so looks a bit messy.