Hey NanoJimmy, :welcome to Nanotank.com! IF you are looking to keep beginning corals, I would go T-5 that way you have a little wiggle room, if you want to go beyond softies, but not all the way to SPS. What are all of the dimensions of your tank? If it is a cube you can get the 24" Nova extreme by Current USA, which runs $170 on premiumaquatic.com, but looking for a used one you could get it cheaper.