RaNDo35

you should look into hard lining for late game canopy leveling. 3rd to 4th node from the top, pinch the stem in the direction you want to bend, slowly bend at the pinch go slightly past the desired Hight by about an inch, as the plant will rebound itself upwards again

why would you grow 12-12 from seed ?

hey bud, i just wanted to point out, i dont see enough air flow going on in your tent. i too have the same burning. it seems random at times kinda spoty but also burned the tips. its because of where the water pools on these plants when the lights are off. not enough air flow and it collects due and burns when the lights turn on. rather hard one to figure out. but deff light burn. id also add more cal mag tho just being safe.

lessen your lighting period later in the flowering period to lessen fox tailing. think about how the light is outside. i get these are autoflower plants but they still hold on to that photo specific lighting needs in a certain sort of way. i flipped a auto gorilla glue from 12 12 to 16 and it started stretching again and fox tailed like crazy. thought i could get away with it... boy was i wrong lmao. 20 hrs is great for vegging especially if you have raised co2 levels. but late game id back the lighting off to keep it from stretching out again. also some plants really appriciate it as i said yes .. . these are auto flower but they still retain some sort of photo specific "ness" your grow looks great try it out, it could be one of those "missing pieces" we all find along the way.

lower your nuti levels. i got lock out from using 10mls a gal. also add in some other nutis the fox farms trio is a nice start.