Need some help please

[Airbone]

One of my ladies in my flower tent has started to get brown edges on some of the fan leaves.
Also those affected leaves curl up as well.

Anyone know what’s happening?
And what should I do to fix it?

thanks

 

[ROSTERMAN]

How close are they to your lights and what is the temp in there?

 

[ROSTERMAN]

Could be your lights need to be moved up a bit. or cooler air

 

[user 60570]

 

[Airbone]

Lights are 14 “ from the tallest… but this one is about 18”.
Temp stays between 72-76 degrees.
Temp sensor mounted mid plant height.

 

[ROSTERMAN]

Lights are 14 “ from the tallest… but this one is about 18”.
Temp stays between 72-76 degrees.
Temp sensor mounted mid plant height.

LEDS should be 18 to 24 inches so maybe too close

 

[ROSTERMAN]

But as BIGSUR said are you running Cal mag

 

[Airbone]

Yes I run cal mag.
I was only using it every other feeding until recently.
Now I’m using every feed.

I will move my lights up a little higher though.
Can certainly strains or pheno act different to the light?
Because that one is the shortest in that tent.. and the only one showing problems.

 

[Airbone]

I flushed them last night and tested my runoff as well.
It was at 5.9

usually it’s 6.2 ish out.

I always ph every…. Waterings or feeding to 6.5.

soil ph problem maybe?
I don’t have a soil ph meter… I always have just adjusted what I gave them.

Is that bad?

 

[pute]

Looks like a magnesium deficiency, ph is low but not enough to cause that. Especially since it is usually higher.

 

[pute]

Listen to Big Sur

 

[ROSTERMAN]

Its not the lights, like Pute says work on cal mag

 

[Airbone]

Hmm…
Ok so I add 1 1/2 tsp per gallon when I am doing nutrients.
Should I do it in between feeding when I am watering only?

 

[pute]

Hmm…
Ok so I add 1 1/2 tsp per gallon when I am doing nutrients.
Should I do it in between feeding when I am watering only?

I add it every time until 30 days before harvest. If you apply up to harvest the smoke will be hot on the back of your throat.

 

[Airbone]

Ok thx I’ll do that.

 

[Airbone]

Gave them all a dose of cal mag. Hopefully it doesn’t get any worse.

 

[WeedHopper]

Yep. Cal Mag will fix this issue i bet.