lite would be fine. its really nice for controlling the heater to protect from a meltdown if your heater sticks on. i use my lite on my 28g to controll heater and turn a fan on to cool my tank. it keeps my temp really stable and gives me piece of mind. I didnt really need the reef keeper elite plus net, i just bought it as a toy to play with. I also wanted it so i can setup a float switch for my display tank, since i have a hang on overflow i want to use a float switch to keep the display tank from overflowing if my overflow ever loses siphon or gets clogged. but a lite is great for 119 bucks you can safe guard your tank against a stuck heater, turn a fan on for cooling, and put your fuge and tank lights on opposite cycles.