Is this cal-mag or potassium deficiency

[youngwun11]

Please help week 6 of flower I don’t know what is going on

 

[Bukvičák]

Can you tell us more about your setup? And start with light and medium please

 

[youngwun11]

Can you tell us more about your setup? And start with light and medium please

4x 1000 watt hps turned to 750 I use bush doctor coco loco and mills nutrients plus cal-mag

 

[youngwun11]

Temps stay between 73 night 79 day all lights are cooled and have a mini split humidity it stays around 50

 

[Bukvičák]

4x 1000 watt hps turned to 750 I use bush doctor coco loco and mills nutrients plus cal-mag

Hmmm, I dunno about that nutes and medium, but based on the pics I would say it has close connection to the light as I see marks of light burn on affected leaves.

 

[go go kid]

sure looks like heat stress, but its affecting lower leaves as well as ones closer to the light. its uneven so it could be something else. sorry cant hrelp more

 

[Sokofofat]

Looks a lot more like its a potassium deficiency to me.