Did you notice getting less algae and more coralline when you brought in the large SPS pack from SawDonkey?
Initially, all my tank inhabitants got majorly pissed! They noticed a big change. However, after a big WC and carbon everybody settled down. Now, I barely get algae on the glass and coralline is taking off. I think it's positive allelopathy. I am feeding a ton in a fishless tank and running much dirtier water by dosing nitrates as well.
A nice way to start a mixed reef tank is to start with an SPS tank. LOL. Wish I kept that dinner plate sized monti cap as a tank starter.