Leaf problem

[Weedarast]

Hi,

Strain: Barneys Blue Cheese Autoflower
Mediun: soil, coco, perlite, peat, pebble
Vessel: Smart pot
Fert: Greenhouse powderfeeding grow + phed tap water (stood 2 weeks before usage)
Light: 3w white leds, total 144 watts (car led bar lights experiment) and GalaxyHydro 300W

I installed Galaxy Hydro 300 in addition to 2x72W Vehicle led bars on week 6. Every day it's growing 1 cm. I measured lux of GalaxyHydro and made it closer to get lux value above 30,000 3 days. Leaves started to curl up and some spots appeared.

Here are pics:

 

[Potted]

Looks a little like a light burn. My 2c

 

[Flockshot]

Leaf curling may well be from your light. I think the spots are caused by lack of a PK boost in your nutrient schedule. If I am correct about this your leaves will look worse tomorrow
May I suggest coco, or soil, or peat, but not all three in one pot, unless you know your mix and have confidence in it.

 

[Canuck147]

Needs some calcium magnesium additive.

 

[Weedarast]

Thanks for help!

 

[Weedarast]

I added today booster. Let's see what will happen. I also increased the distance with light source.

 

[Weedarast]

Are u sure, that CalMag deficiency could cause leaf curl?

 

[Canuck147]

Leaf curl might be from lights being too close.