Hello all! I am in 3 1/2 weeks of flowering my northern lights...on Monday one of my plants started showing this sign of issues...what is it? 4x4x7 tent with 1000 w hps Ff strawberry fields soil Ff trio nutes PH of water going in is 6.5-6.8 Buds look fine just this leaf issue is troubling Sent from my iPhone using Grasscity Forum
CAL-MAG 1tsp per gallon every feed Maybe some wind damage And heat stress Good luck Sent from my iPhone using Tapatalk @ I love growing weed
She needs more calmag. Im willing to bet that leaf came off the lower end of the plant? Sent from my CPH1725 using Grasscity Forum mobile app
Can you put up a photo of the plants? Diagnosing problems from a single leaf isn't very reliable. Have you wet the leaves recently by any chance?
Hey y’all so I’ve watered this morning with some calmag and nutes...hopefully it’ll get them back on track....here are more pics of the whole tent Sent from my iPhone using Grasscity Forum
Definitely looks like heat stress; leaves curl up to limit surface area exposed to heat The other issues suggests to me that u have poor air circulation in n through canopy When lights out lows temps n poor air flow cause this rust type of effect combined with the heat stress to give the look in pic 2 U can see it in pic 1 even better, the higher the worse they get It's hard to notice any defiency in that light need a lights out pic? Remove those leaves , they r wasteing energy better used elsewhere The plant will naturally pump more resources there to try repair damage Sent from my SM-J530Y using Grasscity Forum mobile app
Ok thank you for the knowledge! I have turned my ballest down to 50% and temps went from 82 to 75 I have a fan blowing in the canopy so hopefully they will be fixed Sent from my iPhone using Grasscity Forum
It wasn't the intensity 50% will lower your yield Move the light up or bend the plants lower Use a net , or the down using weights or similar Not the best option Whats exhaust like? Sent from my SM-J530Y using Grasscity Forum mobile app
My exhaust is a carbon filter to a 4” fan blowing thru a closed air cooled hood then blowing outside Sent from my iPhone using Grasscity Forum