Need a bit of advise here

[Leesmith12345]

I’m about 4 weeks into flower and one of my plans has started getting thes marks on the fan leaves next to the bud, all marks are in upper leaves what is this?

 

[Leesmith12345]

Can provide more photos iff needed

 

[Leesmith12345]

Hello is anyone there?

 

[bobtokes]

they look like they need a good feed, what you feeding them on whats your ph temps RH water EC ?
when did you last give um cal/mag, growing media ?

 

[Leesmith12345]

Feeding them biobizz bloom just now only 0.5ml per l ph of solution is 6.5

 

[bobtokes]

what are they growing in

 

[Leesmith12345]

Biobizz all mix soil

 

[Herb & Suds]

It looks like you allowed your PH to drift !

 

[Leesmith12345]

You mean the ph of the soil? Will it make it to the end of flower do you think?

 

[Jypsy Dog]

I see. Heat Stress and pH issues. This is worth the look.
http://catnews.org/FREE Pot Books/Marijuana Garden Saver [2005].pdf

 

[AKA Big Boss]

Likely heat stress but could be boron or nutrient issues

 

[bobtokes]

Feeding them biobizz bloom just now only 0.5ml per l ph of solution is 6.5

just had a look at the dosage for biobizz bloom, 2ml-5ml @litre, your starving them to death

 

[Leesmith12345]

just had a look at the dosage for biobizz bloom, 2ml-5ml @litre, your starving them to death

The ppm coming out the bottom is 1400 ppm

 

[Beachwalker]

It looks like you allowed your PH to drift !

How are you pHing your nutrients, and what are you adjusting them to?