Don't buy Advanced Nutrient products they are just a bunch of bullshit hype. I use Remo nutrients right now and getting great results so far. 6 Bottles each at even ratio's. Super easy, even for a stoner. How you supposed to mix 25 bottles at different ml/l when your baked? lol
Nutrient lines are formulated to work with their product lines to give you the best ratio of nutrients when combined all together. When you start throwing in other stuff from other companies, that goes out the window and you really are going down the guessing game road as to whats in your mix, how will they react to one another, and what are the ratios of each element, now that you've mixed in a few different brands of stuff. You can use additives like Green Planets Massive, or Rezin, or Superthrive in conjunction with other product lines, because they have small amounts of elements, but might be high in carbohydrates, or B vitamins and things of that natuire, but when you toss in a micro nutrient of one brand, and a bloom formula from another, and a calmag from another.....yikes! Not a good practise in my humble opinion.