I have the Aquatop Recife 24gallon tank and recently added the HD Prime light. Wanted to use the older model Neptune aquacontroller jr, which i have, but my display isnt working. The backlight doesn't light up. I would like to be able to control control my koralia, heater, pump and skimmer. What are everyone's thoughts? I am not dosing anything now. Is a controller overkill for a small tank? Is the newer Neptune Jr adaptable/large enough for what I want to control, I dont want to have to get another controller is I start with the smaller model? TIA for all ideas.