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Everyone, I'm sorry for the mixup. The medium I'm using has no coco. Its composition is as follows: 80% peat moss, 20% vermiculite + NPK traces, EC = 0,7. From that, I've added 10% worm castings and 18 grams of cockroach castings, 18 grams of mealworm castings and 18 grams of bokashi.

I don't! I Always start with fresh medium.

Thanks, everyone. I was suspecting it was some sort of deficiency, but was also thinking it could be light stress and/or nute burn. Will do a foliar spray with epsom salt and report back, in case anyone else stumbles upon this thread in the future.

120w led (quantum board with samsung lm301h diodes, running at full power 40cm/15in away from the canopy), humidity is on the high side... 77-87% daily. Temps are mild, 20-25ºC / 67-77F.

Hello! I’m currently growing three dutch passion white widow plants inside a 2x2 tent under a 120w led with a good exhaust and oscillating fan. They’re in 3gal pots filled with coco, peat, worm castings, perlite and other amendments, and I’m using a local organic fertiliser which has always...