Im currently using cypress mulch for substrate and was wondering if it would be harmful to my tort if he eats any of it? It also seems to get very dry. I started spraying the substrate and the tort daily but was wondering if I would be better off with a different substrate. I have also noticed that people put live plants in there enclosures. Is it possible to grow plants or maybe even grass in a glass tank with no sunlight using a mercury vapor bulb? I was bored one day (depressing winter) so I decided to grow grass in a pot in my kitchen and was wondering if it would grow in my tank or if i could feed some of it to my tort. Advice or interesting ideas would be much appreciated.