Are there any SPS tanks out there that are NOT adding coral food supplements?

[Zoaelite]

Water changes and 2 part FTW.

Major nitrate sink is the DSB's and macro/ mangroves, I power feed my fish and do allot of LPS target feeding, Vit C and Coral Snow are added every so often but I don't do it religiously. I'm pretty happy with my SPS and considering how mixed the system is I'm surprised there doing so well.
Levi