Heinbaugh told me about the new BRS video. I checked it out today and its a great video for beginners all the way up to experts. This is regarding an incredibly beautiful 900g SPS grow out tank at Workd Wide Corals. They clarify a lot of parameters that hobbyists should shoot for. Alk reading & max fluctuation per day, calcium, magnesium, equipment, lighting, everything. I think it should be made a sticky personally. A lot of great info!
https://www.bulkreefsupply.com/video/view/wwc-brs-recipe-for-the-iconic-900g-reef-tank/