Good Day all i have a 3 month old indoor headband strain that i just switched to 12/12cycle its in a 3 gall container about 3 ft tall under cfls/leds i flushed it about 4 weeks ago and havent given nutrients since then just water and now sum leavs r yellowing from lack of nitrogen i would assume but some leaves apear as if they have burn marks and r brital and falling off so am timid to add nukes and i also suspect heat may be an issue the temp is well over 80f maybe even 90 on some days but all 6 other strains next to it are doing well. could anybody give me some advise on what is going on and how i might fix it? ny help would be greatly appreciated.
Feed em. If u flushed them 4 weeks ago and haven't fed since, then Ur leaves r turning yellow cuz their own any nutes for them to feed off of. U should feed around 1 per week depending on Ur nutes.