I was wondering if my snails( not many now but trying to start breeding for puffer food) who live in a 15 gallon with plants about 3/4 full of water, could be housed with Firebelly Toads? i would like to put a glass top on the aquarium about 6-8 inches taller then the aquarium with more plants and maybe some type of shelf for them to be out of the water( i have a top around my 55 with lots of pothos type plants and glass sliding doors)my concern is will the snails die from "toxins" or will the snails then hurt my puffs when they eat them?Also is that to deep for the toads to be in?thanks.