@jisc
My Schedule:
Channel 1: 12pm on, 5pm off
Channel 2: 9:30am on, 8:30pm off
Channel 3: 9:15am on, 10:45ppm off
My Nitrates are between 10 and 16. I had to move one SPS down to the bottom because it was bleaching at the top and it was happy there. The other encrusting one at the top seemed to love it there (that one was a leftover after someone fragged it and was flat initially). It grew from there. And the monti in the middle was two small pieces and simply grew huge. I was taking chunks back to the store for credit. I use RODI, instant ocean (I change to salinity about four months ago). bi weekly water changes, no dosing. The tank is a year and 4 months old this June. My second tank has nitrates stuck at 0 and for me, everything is growing slow. Hope this helps, but I'm not endorsing the salts, just sharing what I've been using.