I've recently gone under a small algae explosion, so I've been adding API's AlgaeFix to my 55 gallon aquarium, but I also have three apple snails. I don't know if they are linked, but it seems ever since I've been adding the AlgaeFix, my snails have become more lethargic, and sometimes they float and I have to spin them around to get the bubbles out of their shells. I was wondering if the AlgaeFix was possible hurting my snails. I read the label, and it says not to use if you have freshwater crustaceans, but I wasn't sure what it would do to mollusks. Can anyone help me out please?