Hi there, I've decided after some advice to separate my paddle tail from my fish. I'm going to put him in the smaller tank the fish used to be in. Whats the best way to set up the tank? I've heard some people saying that they should have a wee platform to come out of the water and some people saying as they are fully aquatic they don't really need it. What about filters do I need anything like that in a tank for him and how deep should I have the water and should I have some artificial plants? I have lots of large rocks to create hiding places. Help me please!! 