Hey brother. Don't know if someone gave you your answer through PM but I'm going to answer this question as best I can because no one else has...
I haven't used Sta-green but just looked it up. This soil is a lot like Scotts all purpose soil and even though it works, it is not tailored to our Cannabis plants, high growth rate and nutrient needs. If you have access to a store/hydroponic shop that sells mediums specifically for cannabis or "tomatoes", I highly recommend giving them a visit. Since you're a dirt famer, like me, I'm assuming you'll be growing in soil again for your next run. You will find two types of soils, in general. Some will be 'nutrient amended" meaning they have usually been primed with nutrients to carry your girls through the early stages of growth without a need for nutrients (usually carries them 3-4 weeks or so). Then you'll find what I call "Neutral" soils. Just bare bones soil that isn't amended but does have all the other things we do need (ei. peat moss, perlite, worm castings etc...).
Nutrient amended soils CAN be attractive because they're amended and it sounds nice not to have to feed for 4ish weeks. But I personally had issues with these soils (specifically Fox Farm Ocean Forest). It's hard to gauge what nutrients, and how much is actually in there (especially Nitrogen-they use bat crap in there's). This made it hard to feed... How much of my nutrient line do I put in? The benchmark feeding chart with my nutrients went out the window with this soil, and since I was a new grower, I struggled. If you go this direction, however, I would look at Fox Farm's Ocean Forest or Happy Frog, both of which are tailored for cannabis (tomato) use.
Which leads me to "Neutral" soils. I love them. They have everything you need in a medium, but isn't amended with any extra's. This allows complete control on my end, with what and when I want to feed, without worrying about giving too much or not enough of one micro/macro nutrient. I do recommend these soils, overall, if you want complete control of your fertilizers and what your plant will be seeing at all times. I use two main brands now and have been mixing them 50/50 for my current grow. "Dutch Treat" and "Canna-Terra". Dutch is your basic soil, conditioned with perlite and canna terra is more of a loamy peat moss blend (good aeration). Whatever soil you use, amended or not, I also suggest putting at least a 1:10 ratio of perlite to soil for better aeration and so your roots can breath with the pockets of air the perlite creates.
Anywho, doesn't matter what soil you go for, but this is my two cents on what I've used, problems I've encountered and the solution I used to gain control again. I'm glad this soil worked out, it usually does, it's just not "optimal" for what we grow and are more of an all-round general potting soil. The main perk of these soils, though, is they're cheap, whereas the mediums I suggested are not... but are worth it, trust me.
Cheers man, hope this helped, if at all. Throw me a line in PM if you'd like to talk further on different mediums and how to condition/tailor them for our purposes. Good luck! Talk at you soonπ