LOL! This can be a hot button topic around here..... AN does "work" BUT-
I don't think any of the top end growers use AN.
AN is a parasite on the growing community! They make stupid "claims" about results from the huge amount of products they make. The thing being is that you don't NEED all that CRAP separated into all those "miracle" supplements to grow great buds at any "level". In fact the level of "grower" thing is an outright LIE!
In the end your paying HIGH dollars for watered down nutrients and supplements that, for the most part - don't or shouldn't have been, In separate packaging! They used to be SO BAD, that they had the SAME 2 chemicals in 3 different packages. Listed to do 3 different things! Of course, you only needed one of those with the right mix ratio to do all 3 jobs....The point of that is to confirm that all they are trying to do is get YOUR MONEY and charge too much for their products too!
They did drop the 3 "same' things down to 1 or 2 from pressure by growers who speak the truth!
So, I (and many others) Call AN a rip off and basically they lie about way to much about what their products actually do!
All of his chemical engineer's have quit or been fired because, they have been at odds with the owner on how he presents his product.
One of them has started his own line and,,,,,Has the old GF of the AN owner with him!
So then AN is something you would be better off avoiding..
I would look at Hesi and Canna products first!