Are the browning leaves from lockout?

[dba1954]

are the browning leaves possibly from nutrient lockout? The plant is 6-7 weeks old and have been following the foxfarm schedule of nutes and maintaining a PH of 6.3-6.5

 

[Roy Growin]

First glance I'd say K deficiency, possibly exacerbated by a little too much N
Have you flushed the soil at all?
Maybe a rinse followed by a shot of PK & CaMg will help - usually does

 

[dba1954]

i gave it a good flushing this morning

 

[Emilya Green]

I am suspecting that this is a common magnesium deficiency and that some of this damage extends up into the middle of the plant in several locations. That could be solved by adding calmag to your feeding regime. I can't tell from the photo how big the container is, but similar bottom fan leaf damage can also be caused when the plant is rootbound and needing more space. This might also be what is causing your upper leaves to point downward toward the container, but that clawing response could also be indicating an overwatering situation. Lots going on here, but only more information will point us to the real cause and without that, I am only guessing.

 

[dba1954]

i flushed and will add a little calmag next watering. The container is 3 gallon but the dirt has settled 2". I was thinking about re-potting with more soil (fox farm) but concerned about doing
it this late in the grow cycle... btw it's a northern lights auto

 

[dba1954]

after the flush I took some more photos. The different LEDs in the house were effecting the color. this is with no LEDs on, against a white wall and bouncing the flash

 

[Emilya Green]

Are you feeding every time or every other time? Feed / water / feed/water gets you to two feedings a week typically and if the cause of that upper clawing is overfeeding, that could be the remedy. Good job on the flushing, that has got to help.

 

[dba1954]

yes, water/feed/water etc about every other day, thanks.... do you think I'm over feeding?

 

[Craig1156]

i gave it a good flushing this morning

Make sure you flush with straight water maybe couple times a month or at least once. Definitely use cal-mag which helps roots absorb fertilizer. With fox farm fertilizer I cut the Big Bloom to half strength. Being root bound can cause this also. Might need to go to bigger pots next grow. I'd use 5 gal pots. Fox Farm Ocean is an excellent soil for cannabis.

 

[Emilya Green]

yes, water/feed/water etc about every other day, thanks.... do you think I'm over feeding?

if you are following the FF soil chart, then no.

 

[dba1954]

Make sure you flush with straight water maybe couple times a month or at least once. Definitely use cal-mag which helps roots absorb fertilizer. With fox farm fertilizer I cut the Big Bloom to half strength. Being root bound can cause this also. Might need to go to bigger pots next grow. I'd use 5 gal pots. Fox Farm Ocean is an excellent soil for cannabis.

fyi .. in one month I'll be harvesting. This is an autogrow so short life span

 

[dba1954]

if you are following the FF soil chart, then no.

to the letter but not using sledgehammer, just ph adjusted H2O

 

[Emilya Green]

I think all the problems can be related to the small container not filled all the way and the need for Cal mag

 

[Craig1156]

fyi .. in one month I'll be harvesting. This is an autogrow

I see, I only used auto once and decided with the diligence involved I quit them because I wannted more product than autos produce. I now buy strictly feminized seeds. Going that route though you have to have a veg /flower stage lighting regimine but really no big deal with a timer. By the way your plant looks good considering the small problems and fairly large for an auto. Enjoy man.

 

[dba1954]

I think all the problems can be related to the small container not filled all the way and the need for Cal mag

i transplanted to another 3 gal container with additional foxfarm soil (added to the bottom) to bring the level up to the very top. I also added calmag to the water... thanks everyone

 

[dba1954]

It's now two days since I flushed and transplanted. To my surprise most of the colas have grown 2 - 2.5" , Very surprised indeed

 

[Craig1156]

It's now two days since I flushed and transplanted. To my surprise most of the colas have grown 2 - 2.5" , Very surprised indeed

Sounds like the roots just needed a little cleaning out. Good luck!

 

[Emilya Green]

It's now two days since I flushed and transplanted. To my surprise most of the colas have grown 2 - 2.5" , Very surprised indeed

Now take what you've seen and consider the advice that you've heard to never up pot an Auto... I think you've just debunked this little bit of bro science.

 

[dba1954]

it's still alive

 

[Emilya Green]