Horrible Green Algea Prob PLZ HELP

LOL that's why I always use a long slow cycle and spend the time to get my parameters up and steady and have never had a issue with growing coralline .. But once they appear that means the water is ready for corals and the down side is the Coraline's will suck out the 3 mentioned elements really fast. Thats all the purple up stuff is. Just the dust from aragonite and some thickener that is used in cough syrup and other products I can't think of the name of it now.. But all that does is the aragonite is just Ca Carbonates and Magnesium booster and people wash it out of their sand LOL You get the levels up and steady and I think you will see the water look bluer and clears and loose that yellow green hazy look and some good carbon this is where y I would start..Any ideas as to what the levels are now ? Glycerin LOL thats it