Aqua Flakes A and B. I called the H&G cust service as the A and B only listed a few nutrients on the bottles. I figured that couldn't be correct and called. There are over 12 micronutrients and a and b need to be combined in equal parts to maintain availability of all the nutrients. I was relieved to hear that the listed ingredients were for lrgal reasons of labeling the npk and that they were not just 3-5 ingredients. Also the rep said that its a full flowering formula, and that nitrogen boost was needed. so for veg, Maybe a lil N is needed, but for coco, calmag is needed also which has N in it. so I will be using A and B and calmag. less is more right! figured id share that info as the Aqua flakes a and b does Not list the micronutes. (also to keep it secret, keep it safe!) happy growing