Hi all, at the moment i have a small 10 gallon tank with a baby african dwarf frog, two small angel fish, a dwarf pleco and an albino algea eater. I want to upgrade to a thirty gallon tall and add a plexiglass cave to it with a steep ledge that levels off about eleven inches from the top of the tank to a six inch ledge and extends about ten inches from the left side at the bottom. I was going to fill it to around four inches from the lid add a peacock eel and a small colony of cherry shrimp. i have checked out the ph and tempurature needs of them all and they are compatible in that manor. does this sound like a reasonable set up to you? and what if i were to add say 3 or 4 marbled hatchedfish? thanks in advance!!!!