shred5,
In my exp. with SPS, going with halides is the only way. you can get them to survive on VHO and also PC, but halide is the best way to go for color, growth, and of course, GLITTER LINES in the water. ther are lots of places selling SPS frags that will live and grow under VHO. PC kinda sucks due to the fact that the actinic bulbs dont stay "actinic" long. if I were you I wold do a 250 wt, 6500, or 10000K halide, plus 4x VHO. you can run 4 24" on a icecap 430, if money is the big prob. I would recomend though, if you can afford the few extra $$ to get the 660. I have tried the 175wt bulbs, and would never waste my time on them agian. anyway, if you are doing an all
SPS tank, you will eventuly want some of the super colored
SPS corals, YELLOW, PURPLE, BLUE, etc. they keep best color under halide.
oh, from exp. i would not go with an iwasaki bulb. that is how I did my 75, and when they are on you really lose the colors. despite what you read about PAR values, go with a bulb that will be estheticly pleasing to YOU.
Gene