Tom,
The Mantis are amazing creatures, but can indeed be delicate! I am loving this new colored bulb! Seems to be perfect until I make the jump to T5's! Gota love the one bulb replacment! My corals seem to be taking the new bulb quite well so far. Seems I may have a few more days until I totally see what changes will take place. So far, I am not losing any color. They seem to be holding steady!