Great White users - method of application?

Does anyone grow with Great White Mycorrhizae powder in their DWC set up? If so, I have a few questions:

1. How many tsp per gallon do you use?
   • On the bottle, the chart for hydroponic application says 1tsp to 10 gallons, then proceeds to read *Can be applied using solution mix below (which is 1tsp per 2 gallons).
2. What method of application do you use? Do you mix it directly into the reservoir, or do you apply it to the roots directly? I think I will just mix it into the reservoir, but curious to hear anyone's thoughts on that!
3. How many times do you apply it throughout your grow? Do you apply it on every nutrient application once starting, or do you apply it when you change your reservoir? Or something else?

I'm leaning towards mixing in 1 tsp per 2 gallons of water upon application. The instructions on the bottle seem contradictory. If anyone has experience with this, I'd love to learn!! Feel free to give feedback on any or all of the questions.

Thanks,

Fellow DWC grower