Hello everyone! I've been super busy over the past few months with school and chores, but I have finally decided to put Pacific chorus frogs in my 120 gallon aquarium The question I have is, what can I put on top of gravel that will be under water, to prevent the frogs from swallowing it? Or will this not be a problem? I will post pictures of my progress later today

0.0.1 PCf
Soon to come 0.0.4 Phyllobates bicolor