I just added a nerite snail to my 10 gallon tank today and within a couple of hours it had this white stringy substance coming out of it. The substance isn't moving so I don't think it's a parasite or anything. It looks like white little sausage links coming from its mouth. And the snail is in its shell not moving around. It's not dead because I saw it's little tentacle things poke out from the shell. Does anyone have a clue what this might be? I really need help don't want anything to happen to my snail.