Hi Simon.... my tank is in a state of transition. I've changed my maxspect razer to Hyda 52. I'm still adjusting the light settings. I was dosing red sea ABC for ca, kh and mg using a jebao dosing pump. I'm going to switch to ESB B-ionic. For coral nutrition I was dosing Red sea reef energy. I've switched to Fauna marine color elements and Ultramin S. I'm still using reef roids to spot feed my zoas and lps.