You told me in PM that you were afraid for them to grow to tall for your Led cabinet.
To avoid getting them grow too tall, you are supposed to train them as soon as you can > Bending down side branches and growth tip and keep it all low and in place with pipe cleaners. Better not to trim/cut them at all.
Please be careful with the Cal/Mag. 1guy1plants grow got fucked up because of it. ^^
If you have it laying around in your fire place, then please opt for wood ash in stead. They have been acclimated to wood ash since 10+ generations.
Earth Worm Castings tea/toppings would be the most appropriate way to feed them.
Or if you don't have that, then chickenshit/sea weed pellets tea/topping.
Again, they have got used to that since 10+ generations so they are better acclimated to particularly these types of ferts.
Molassis is good for your soil life ofcourse, but too much of it will induce a too heavy leaf development.
Thank you for testing them DABaracuss