Do you have a refugium. If not, get thee a refugium now, with these you will have natural food and will help keep a clean, more stable environment. In the fuge do a 4-5 inch DSB with chaeto and some PC lighting. I wouldnt have any reef tank without a refugium.
---Also, feeding wise, if you have clams then you may want to target feed some DT's phytoplankton, but if you dont have clams then you can skip the phyto.
----I like having some nutrients in an SPS tank. Some like it to be 0 ppm of Nitrates and 0 phosphates. I like 0 phosphates and about 5 ppm 's of nitrate.
------Feed your coral a homemade mush of some sort. Or, just get some FROZEN CYCLOPEEZE.
----Enrich it with some zoe or selcon or both. An feed to tank every couple of days. But dont go overboard, just slowly experiment over time and see how the corals react.