Light Burn?

[SmashGuitar]

I am thinking i have a bad case of light burn. I have been having problems all month! Leaves and stems are turning red. I believe i had a potassium problem at the begining of this month and regularly started checking run off. What do you think?

 

[dphipps1020]

Looks like natural coloring to me but I could be wrong. Maybe someone else has another suggestion for you. I just don't see anything that seems wrong with the leaves and if you're already over 4 weeks into flower that's when it usually occurs I think. I had a strain that had purple coloring and it didn't really start until around week 7-8 I believe, was completely green before that.

 

[smoorman]

I don't see curling of the leaf edges or specific yellowing of the leaf tips. Which as I understand it, happens with light burn. Are the problems worse as you get closer to the lights? Check the troubleshooting tutorials above.

 

[SmashGuitar]

It seems to be spreading from the bottom up i still have a few light green leaves on new growth. I found something called molybdenum deficiency but it says it is rare. Some of the tips of the leaves are burnt and curled up.

 

[Cloud]

Looks like a ph issue

 

[Cloud]

Look at the ph of the run off and go from there

 

[SmashGuitar]

I think i will recalibrate my PH pen and go from there! Thanks Cloud