Husker 40 Breeder SPS tank

So I traded my T5/LED combo light for a calcium reactor for the upgrade setup. Because this tank is still running while we finish the stand, I had to light it with the LED light for my display refugium. Doing the T5 --> LED switch really makes you appreciate how awesome ATI T5s are. Everything looks kinda blah to my eyes under the LED.
 
Apparently I'm doing everything I can to kill off my SPS before moving everything over to the new tank.

I didn't want to fry the corals with the LED, so I started off maxing them out at about 30% on all the Blue channels and 15% on all the white channels. 2 days later my dKH jumped from 8.0 to 9.9. A couple frags that were still recovering from the previous alk drop are now completely dead and bone white. I turned off my doser and washed all the kalk out of the ATO. After 2 days, dKH hasn't dropped at all and several frags have pretty bad burnt tips.

Hopefully the new setup is ready to go soon, because this one is going out tumbling.
 
What livestock did you end up going with? I'm building a sps grow out frag tank and want to keep nutrients low.
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