I’m thoroughly confused. I have an 16x32x52 Intex ultra frame with the sand filter/swg. Different advice all over the place. I want to know when I add salt, chemicals to balance, backwash, turning on the pump, turning on the swg. Some people say salt first, others say salt last after you’ve balanced water. I also have high levels of manganese for which I got Metal Out for. Instructions on that are pretty clear. Says before chlorine is added and may need extra after backwashing, but also not to combine with other chemicals (?). When does backwashing occur? After everything has been added? My manual says I need to backwash upon setup. If I balance the water chemistry first, won’t backwashing screw up that balance? Is there a numbered list of steps I can follow? Help!