Some leaves don't look ok...

Abio · Feb 18, 2018

Started my season 2018 early this year. And it seems it will be "too" early cause weather-predictions are not really giving better weather soon...
So my plants are all inside at this moment. They get light from TL-lamps and also some led-lights.

Some of my plants does show leaves that turns out dark (or darker spots). I'm not sure if this is something to worry about (maybe it's even normal) or what I can do to keep this down.

moruga welder · Feb 18, 2018

what size lights and how close to plants ?

Abio · Feb 18, 2018

I'm using Philips TL5 HO 49W 865 lamps (6500K).

They are a couple of centimeters from the plants (like 5cm or about 2 inch).

Made the distance a bit bigger now.

moruga welder · Feb 18, 2018

yes good idea , thats what their looking like , lightburn , do you have a fan at one end of the lights pointing upward and through them ? This will help and allow you to keep them closer

Abio · Feb 18, 2018

Thanx for the info. I placed a fan at the end of the table. Hope this will help

ELCouz · Feb 18, 2018

Definitively a "sunburn"...nothing alarming. I find that some variety get these purple marks easier than others. This is just the way plants deal with excessive light.

Edmick · Feb 18, 2018

Yep, lights are definitely too close.

U)<now · Feb 18, 2018

Abio said:
Thanx for the info. I placed a fan at the end of the table. Hope this will help

With running those lights, you could probably be 10 inches or more above the plants and still be just fine. I'm only using T8 and have them at 8 to 10 inches above the plant canopy and they are still nice and short.