Hello all, I am new here and have a question. I have a 6x2x2 ft aquarium that i want to turn into a firebelly frog sanctuary. I will have 3 ft center of water with 2 ft each side of land. 1) How deep to have the water. 2) How many frogs to house 3) most important i need VERY low maint. plants. Also will have several steams snd waterfalls. Thnx for any feed back