I have been researching lighting a lot, unsure of what to get. My tank is 18” deep. I have been looking at T5 fixtures, Tek light or Current Nova Extreme pro. 4 lamps or 6 lamps both seem to be about the same price. The only major price difference is the legs for the Tek, I do not want to hang the light. I really don’t know what type of corals I want, I just don’t want to have to upgrade later. Everything I have read is that HQi is the only light that will support High light corals. Any info information will help a lot.