Hey Jarrett, the tank looks good man, let everything encrust, thats when it'll finally start to take off. Try testing your parameters at different times throughout the day, esp since you are manually dosing. With manual dosing there is an immediate spike in alk and cal when you add them in the morning which could effect coral growth because they get a small quick shock every morning.
also, I absolutely agree with everyone on the GE6500k bulb. I switched away from it to get a bluer look but will definitely be going back because i believe it is great for growth, put it in the middle of the fixture. As far as supplements go, I have tried Pohl's and am not impressed especially for the price.
One thing to consider is that it sometimes takes a tank a little while to bounce back from any slight inconsistency or problem that may have arisen. The tank may be 1.5 years old and husbandry may be almost perfect, but one day maybe you moved a rock which released some decaying material which raised your phosphates a bit, then a month later you forgot to dose for a couple of days, or there was the two weeks of the hurricane! It takes time for the tank to get back to normal after any slight change. SPS is maddening. We are all nuts.