Well I have been running autoflowers for 10+ years, there a funny plant as if the breeder does not get all his crosses right you will have problems, they hate stress and you don't transplant, so I now know all the reputable breeders so don't usually have problems with beans, I keep things very simple I feed from day 1, but it is botanacare pro grow very light food, sometimes you have to prune a bit, but when I flower them I go real light, I use
Atami Bloombastic 15ml per USgal then waterd down, I dropped my phone in the ocean with all my pics, I have 3 pics critical chem stomper witch is an F1 and giveing me fits tight internodal spacing and slow branch growth had to prune off allot but in the end she will put out, and an alien berry plant I grew in 1gal of dirt ruined the leaf but got 1/4oz of trim and flower,
ffof is a good mix
happy frog is hotter never used pro mix, advice use clay pebbles for good drainage this is a must, you will probably have to add pearlite for nitro and airation as I have to do with
ffof, my hydro guy recommended everything I use and except for an ocasanal bad bean don't usually run into trouble. If you run into trouble I will help you.