Look, I am not a pro. Simply a Gardner, which is something I've been doing for many years prior to cannabis growing. The term pros is professional growers who's livelihood depends on their crops. This is not cannabis specific.
If anyone is using AN to grow tomatoes in a greenhouse they are throwing away money. Those would be some expensive tomatoes.
You've admitted in previous posts to having a connection to AN. Always good to disclose such things, but that shows a bias.
I know exactly how much my crops cost from start to finish. I know my lighting expense, fertilizer expense, and also my time. The goal is to maximize my output while lowering my cost. AN would only increase my expenditure while not out performing my current setup.
To each their own, not trying to start shit with you, I think you provide valuable info from time to time. Yet I must object to claims I can view as patently untrue.
Eta I also know my electical expenses concerning my fans, and cloning setup.