I think there are a few things to consider.
You have only had those bulbs on there for 3 weeks, it's going to take longer for corals to acclimate. Secondly the tank is only 3 months old, it will take more time than that for the tank to stabilize. I would give it some more time, good things do not happen quickly. I would think with the radiums and vho's, you tank would have crazy color if everything is acclimated and happy.
What reflectors did you end up with, what wattage and what ballast.
I ran 400w radiums for 1 1/2 years and could not have been happier. Now when my led tank was on and the radiums were off, there was some extra pop to the corals. I never considered even adding supplements to the radiums, I think they're that good.