Soil ( meaning anything not coco or rockwool ) is actually harder than it looks. It has baggage that isn't apparent until you look closely. Unless you make your own, knowing its been actually sterilized is just the beginning. Provenance is a thing if you want consistency. When you have consistency - you can stop fussing with that variable. Containerized soil will always run out of gas at a unfortunate time and you need to be well versed in cannabis whispering at that point or indeed, it will go sideways to at least some degree.
Really good soil work is harder than the experienced make it seem, I think. Even traditional gardeners have to use both hands, to find their solutions. Indoor work is not something that translates all that well for many that think they grasp the needful based on outdoor experience. Soil mixes have a capacity to store salts and aren't very helpful if you wanna flush them out. And when they start lacking, its going to be some odd element that should be addressed individually, but is impractical with most nutrient formulations that folks use - so it ALWAYS gets overdone in some way.
