Hey guys so I was wondering if I could change my light schedule and when the lights turn on and off. So I usually have my lights turn on at 10 am and off at 10pm. The problem here is that I work through out the day and don’t really get to see my tank shine in the blue until 9pm. I would like to move up the ramp up to 11 pm and off at 11am. Could I just move the time around with no effect on the corals ? Also, I had a alk, cal, and mag problem. I have dosed alk to my tank and now it is coming back to normal. However I’m still unsure how my calcium and magnesium went up without me dosing anhthing. I did notice that in my mixing bucket I had this black precipitate form on the bottom after having my salt pre mixed for a week. Could this have had an impact on my next water change/new batch of saltwater ?