Hi I have got a 102L tank with 4 Gowlight Tetras, 4 Red eye Tetras, 2 Gold Rams, 2 penguin Tetra and 1 guppy I am going to get 4 more guppy as the others sadly died. I am wanting to introduce more fish and a frog can someone tell me if i would need an above water platform for a frog or not...