I think your pendants are too close to the water surface.
I used to run the lumen bright pendants. When I had them on my display they were mounted around 12" off the water surface and on our shallow coral beds they were mounted 18"-24" above the water surface depending on the coral bed.
I had to build a crazy tall canopy for my display to accomodate these reflectors and I ended up switching them out for T5 almost right away...
Then shortly added the Reef Brites as suplimentation to the T5's.
I was running the same lamps and reflector but on the coralvue dimmable ballsts and i did get some great growth and coloration with that combo.
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