Yup, OG is correct. Mattybear and I have been following GreenGenes on YouTube. Go and watch his videos.
Jacks does not need the addition of epsom salt if you run a slightly different recipe.
In veg it’s 3grams Part A to 2 grams Part B
In flower run 4 grams part A 2 grams Part B
I also feed 2ml Tribus Original/ gallon once a week.
This is all I’m using for the grow right now. I’ll remove Part B and add 1 gram of Calcium Sulfate/gallon for the last couple of weeks.
