Your snail is dying if it is floating. You will have to move it quickly and then I cannot gaurantee it will live. Mine died that way too as we have such a horrible nitrate problem here. Ours is however natural and I do not know what is the cause of yours.
The only thing that I have found to keep ours at a reasonable and even level on a consistent basis is a lot of real plants. But I think your tanks are planted with real plants, aren't they.
The only other cause for the nitrates that I may suggest is the snail itself. It does produce a lot of waste, and you do not have snails in the other tanks. You would be surprised at the amount of nitrogenous waste a snail can produce in even one day and the levels in the water will raise quickly. I was doing 50% water changes like 3 times a week when I had my snails and now that they are gone I am back to 50% one time a week.
As far as the little one goes, I totally agree with poe. She is not hungry if she will not eat. The only thing you can do if you are concerned and do not know if she is constipated is isolate her in one of the critter keepers as long as it is heated for a couple of days with no gravel and check to make sure she is having "poops". But I really think the idea of fasting her for a couple of days is the best one. If she will not eat then, that is the time to take more drastic measures. It sounds like she is telling you she wants different food. Misty did that when she was ready for Big
betta Food (bloodworms). If you have them, you could try one on her. It is doubtful if she would eat another type of pellet, but you may even try that. If she quits eating the baby food, do not despair. They like it now and then for a change even now. Alex likes a meal of it once in a while and so did the girls so you will be able to use it.
I do hope everything works out okay. I am sorry about your snail and hope he makes it. They are so beautiful and I especially loved yours he has such beautiful markings. I will feel so bad for Lava if something happens to him.
Please let us know how things are going.
Rose
