Hey all. I just received a 6 bulb Aquatic Life T5 fixture to put over my 75 gallon. I have a couple of SPS, with more LPS. However, I am going to want to convert it to SPS over the course of this school year (reef tank is in my 4th grade classroom). I'm assuming 6 bulbs would be ok, but hopefully not too much for my lps still in the tank.What bulb combination do you guys think I should do? Ordered the following: 4 blue plus, 2 aqua blue special, 1 coral plus, and 1 purple plus. Want between and 14 and 18k look. All ATI bulbs. Any help is appreciated. Thanks so much!!