Brown marks on leaf don't know the cause

[Krug]

Yeah just some brown spots appearing I've flushed them but they still seem to be getting worse it looks similar to calcium deficiency but I'm growing in coco coir and give them 2ml of cal/mag per gallon of water. And humidity has been a bit high probably mid 60s and they are just starting to flower.

[Mr.furley]

I'd up the calmag as long as your pH is between 6.0 and 6.3 in and out. Best guess with the limited info.

[Krug]

Thanks I'll give that a shot could it be wind burn I've checked a few pics and it looks similar I have a backup fan for the summer and it blows over some of the bottom leaves constantly. Also what info could I have included for a better diagnosis?

[Mr.furley]

I don't think it's wind burn.
It is best to include as much as possible,
Age of plant
Auto/photo
Pot size
Indoor/outdoor
Temp
Humidity
Soil
Nutrition
PH
Watering schedule
Anything you have changed recently
................... I would start with ph.

[Krug]

Thanks bud screenshotted that for next time in hindsight it seems obvious to have included all that haha they are looking a bit better today with the upped cal mag so fingers crossed I got it.

[Mr.furley]

Fingers crossed, do you know what you ph is?