i think the same thing is going to happen. i put three in today and i only see two. i put them in and i couldnt find them they were hiding in the river rock cause of all the gaps. i about 100% the frogs didnt eat one but im only seeing 2 swimming around i think one may have gotten in the rocks and got trapped or is hiding. ill see if they ever get eating or what. i dont think ill put any more in the water portion.