4 weeks into flower burnt tips

[Jeff2159]

4 weeks into flower and some of the leave tips are brown and curling up. New grower. Any help is appreciated.
Foxfarm ocean
Ph 6.8
Ppm. 1840
In a greenhouse

 

[HashFart]

Are you adding nutrients?

 

[Jeff2159]

Yes foxfarm nutrients

 

[HashFart]

Ok to me it looks like a bad case of nutrient burn , to many nutrients , fox farm ocean forest is very rich in nutrients already , this is just my opinion but I would water with just water , hopefully a more experienced grower chimes in , but I've grown photos in Ocean forest with just plain water and it turned out great

 

[Emilya Green]

Fox farm nutrients were made to use with Fox Farm soil... but... you have to follow the directions. I have two guesses as to the cause of this problem. You have either not been flushing as they suggest from the looks of it, and you have a severe salt lockout going on... or, you are not using the recommended feeding chart mixture for this week of the grow. Whatever is happening to cause it, your plants are not getting enough potassium.

 

[Jeff2159]

Fox farm nutrients were made to use with Fox Farm soil... but... you have to follow the directions. I have two guesses as to the cause of this problem. You have either not been flushing as they suggest from the looks of it, and you have a severe salt lockout going on... or, you are not using the recommended feeding chart mixture for this week of the grow. Whatever is happening to cause it, your plants are not getting enough potassium.

Thank you. This makes sense. We flushed tonight and will give it potassium in the morning