I realize this thread is old…but I just want to say thank you! I’ve been worried about my snail for the past few days but didn’t know what to do. I followed your advice and floated him (or her?!) into a small Tupperware in the tank…within less than a minute he was sticking his snorkel out and taking a breath! Poor guy has been on and off laying upside down in the plants for a few days! I hope his swelling goes down and he gets back to snailin’ around soon.