Medium
I put some broken pieces of clay bricks at the bottom of the pot (plastic) and filled with a mixture of garden soil, shredded coconut husk, compost and dried/composted cow dung. The top mulch layer is also shredded coconut husk and older cannabis leaves and dried/composted cow dung.
I think I replanted this too late from a two plants on one small clay pot. Here is a link to the first post on this:
https://www.rollitup.org/t/1011477/
Also I observed thin purple streaks up the stem on some places.
Light
I provide 6~7 hours of daylight in the outside - on the balcony. I don't get sunlight on my balcony until like 11 AM.
And I supplement light with a total of 30W LED (=250W GLS) inside this makeshift grow cabinet.
It was just 15W LED until two weeks ago since I have upgraded to a total of 30W plus a strip of UV LED. I'm planning to switch to that in the flowering stage. Last weekend I fixed all the LED lamps to a single fixture I can neatly hang above the plant. Before it was a mess hanging above - and potentially a fire hazard if it falls on the plant.
So I turn on the light at around 8 AM when I'm awake. When there is sunshine on the balcony (~11 AM) I would move this outside. I would have to rotate the pot around towards the evening - to a shiny spot. At about 5~6 PM I would bring it inside the grow cabinet to give light until like 10~11 PM till I sleep.
I can provide total darkness only during the night - and I'm not comfortable leaving opened lights hanging on a plant while I'm sleeping.