Plant Getting A Bit Yellow At The Top

[project.p0rnstr]

Please find photo attached.

It's been about day 45 of veg (mother plant) and I been noticing some yellowness at the top of my plant. I am not sure why this is happening but there are a couple of things that I feel may or may not trigger this.

1. Haven't been using insecticides to get rid of the gnats for about a week
2. My plant is too close to the light (it's been getting higher and higher so it might be getting too hot at the top
3. Overwatering it (which is unlikely b/c I have been doing bottom top watering recently)

What do you guys think? Have anyone ever experienced this? If so, what are some solutions.

 

[Po boy]

maybe heat burn? from lights?

 

[bkbbudz]

What is your light source and how far from the lights are the tops.

 

[project.p0rnstr]

It probably is too close to the light. I diddn't measure how close it is but I know it's been growing in height every day and every day it's obviouslygetting closer. I will take a look into that.

Thanks.

 

[bkbbudz]

what kind of light are you using?

 

[indipow82]

Looks like heat stress. And possibly a bit of Nitrogen deficiency.

 

[project.p0rnstr]

what kind of light are you using?

CFLs Man. Small grow

 

[bkbbudz]

Ok, then unless the bulbs are touching the tops it is not heat or light burn. Nute burn is the issue.

 

[bkbbudz]

You said you had gnats are they gone? You used insecticide, have you flushed the medium?

 

[GenePerfect]

U foliar feed? Looks like similar damage i had. Caused by nutes pooling on the leaves and not having good movement of the canopy. I moved the light a lil bit away, made sure the fan shook all the nutes off the leaves. No more dead burnt edges. Might work for ya. If not maybe just keep an eye on temps in the canopy. Best of luck