Tropical Fish Forums

[myhamster]

I've had one apple snail in a 55 gallon tank that's been cycling for 3 weeks now. There's a sword, some java ferns, red ludwigia (sp?), java fern, and wisteria in the tank too, well lighted.

For the past week, I've noticed some parts of the shell on the snail thining. Like the outter most layer on parts of the shell peeled off. My pH is pretty high, so I didn't think it would disolve the shell. I've also added a little bit of iodine to the water, because I have red cherry shrimps in there too. Some of the shrimps have molted once. What might be causing my snail to loose its shell? I've also notice it seems not so happy, the antanea thing doesn't stick all the way out anymore. What do you think?

Ammonia: 1.0
Nitrite: 0
Nitrate: 0
pH: 7.8
Temperature: 78F

Thanks!
Eric

PS: I have never done a calcium or hardness test, but I was told that St. Paul tap water is very hard. I have added little pieces of calcium carbonate rock in there too.