You don't need to purchase cannabis for an LP. You have the right to grow your own.
Pierre Trudeau talking about cannabis bellow.
https://www.thetelegram.com/lifestyles/down-memory-lane-the-long-road-to-legalizing-marijuana-252825/
Those plants have nitrogen toxicity.
I know that mixing soil and coco is pretty uncommon and has caused a lot of heartache for a lot of people. I'd just stick to one or the other.
We used Rockwool on a large scale operation so I like to think that I know what I'm talking about.
Rockwool is designed to be heavily saturated because it holds onto a lot of oxygen so I wouldn't worry about over watering it. If you're concerned with over watering you can let it dry back to at...
In the beginning I loved it . I also grow for my full-time job. It's not that I hate it, it's just that when I'm doing for 10+ hours a day I just want to relax at the end of the day sometimes.
I switched from RDWC to Coco a few years back. I found that my bud quality was better in Coco coir as compared to hydro. You could definitely get away with using those additives in coco.