I would bet that is what the problem is. You see when you start out with ferts/nutes in the soil... every time you water you are feeding them/releasing the nutes. That is why they are stunted. Hugo gave you a good formula for a great start! With autos, in the beginning, less is more. Definitely get yourself some Myco. That will help tremendously. You can add some into your soil mixture and when you plant and transplant as well.
I think that will give you a better go at it next run for sure! :smokebuds: