Hello all,
I want to throw in my experience.
I had AI SOL blues for almost 2 years over my mixed reef. Zoa's, softies and lps all did fine. Grew well and had good color except for reds/pinks. SPS did grow and did show decent color, but nothing like Halide.
About a year into my setup a buddy of mine setup a 90ish gallon bowfront. After a couple months of his tank cycling we went in on a frag purchase here and ordered 2 of every sps frag the seller had (about 20 unique pieces). I am very anal about keeping my parameters spot on, he on the other hand is very busy and sometimes things go astray. For the first six months from the purchase of the frag packs I had no spike in any parameters, however he had 2 alk spikes and at least 2-3 temp spikes due to the AC in that room going out. His SPS frags lost a bit of color during the spikes but within a week they were doing fine again. My corals on the other hand did not look nearly as colorful and the growth rate was not even close to his. The real, only difference between the systems beside size (and his spikes in chemistry) were lighting (for the most part). I had 3 AI SOL blues, he had 2 150watt Phoenix bulbs with t5 supplements. I did have a alk spike previous to our purchase together and it literally took months for my corals to recover, some never did.
From my experience with LED, after 2 years, not impressed. I did love the gradual ramp up and ramp down, LOVE the blue's and the glow it gives coral however, where it really counts, growth and color, it just didnt do it for me. I also firmly believe that corals are more resilient under MH/T5 than they are under LED. Nothing factual about any of my statements, just my observations with my experience with LED.
Can LED grow and color SPS? Yes. Can MH grow and color SPS better? IMO, Yes.
I am in the process now of upgrading my 125 to a 225 and have since sold my AI SOL's (I even built DIY fixtures to compliment my AI's with violet, green and red leds) and now have Radium 250's with soon to be 8 t5's over my 125 and things are growing better than they ever have with LED.
Here is the fruits of my labor with LED:
This pic was taken right before I moved my 125 to its temporary place (at a friends shop), this is with the SOL's over it, all LED.
I dont have a pic of my system yet with the halides over it, when I get the tank moved back into my house I will try to get pics.