Live rock changing colors?

[lorenz0]

I went overboard on the snails so i am getting rid of them right away (tomorrow actually)

I was running a old aqua-glo that i used to use for a baby discus tank i am just in the process of switching everything up. Since its a bit of a buget tank I am going with 1 marine-glo, power-glo set for 8 hours (adding timers tomorrow as well) and in the next few weeks a lunar led

honestly i thought i was going at a reasonable pace but it is my first tank and most of what i know is from reading articals. Is there any supplimental food i can add to the tank to help these guys out if there isn't enough food?