I am an aeroponic grower, mixing 6G of fresh nutes per week after fliping to 12/12.
Although I do not use AN products (yet, it seems) their website has excellent videos. One is about the results of an independent lab analysis that shows what mj needs in various stages. Most interesting, and contrary to what many nute mfgs sell for bloom, mj needs less P and more N- K.
My intrepretation of the video is that for the most part, we can use a good grow nutrient throughout, but bump N P K during bloom. I use FF Grow Big, BigBloom, and Botanicare PBP-B. During bloom I add GH FloraMicro (N). In early bud I add Bat Guano (0-7-0) in tea form