Cool Tank it dose look nice and he likes it with that big old grin
i have water on the bottom my tank so if the meal worms hit water there done and frogs are still hungry

. So to solve this problem I put a them in a water bowl in there with no water and just food. I think this will help u as far as the moss goes. My only problem is that my American Toad will sit in the bowl for days like a fat piggie and wait till I put more food in the dish for him. So I put it in there only when it comes time to feed them.