Best Way to Fix Nitrogen Toxicity in Coco?

[Kazman420]

Hey AFN,

One of my girls has developed a nitrogen toxicity. It started about a week ago. I was switching over to bloom nutes (which in hindsight was probably a little to soon at day 30) and I figured I'd just wait a few days and see if the problem cleared up on its own from the lowered nitrogen that it would be receiving. Unfortunately it's been 5 days none of the clawed tips have straightened out.

Any suggestions on the best way to proceed? I'm growing in Coco.

Edit: I just thought of something and I think it might partially explain why there hasn't been any improvement. Even though I switched over to bloom nutes 5 days ago I have still been steadily increasing the ppm's. So despite getting less nitrogen from the previous week it was still slowly increasing/climbing back up. I'm not sure if this changes things in regards to fixing the problem but I figured it was worth mentioning.

 

[Mañ'O'Green]

Well you diagnosed it correctly but need to follow through with what to do - Feed balanced nutrients at a lower PPM.

 

[Kazman420]

Well you diagnosed it correctly but need to follow through with what to do - Feed balanced nutrients at a lower PPM.

Thanks @Mañ'O'Green for the prompt reply! Yeah I didn't put 2 and 2 together until after I hit the post button. Would a 50% reduction in ppm's be too drastic? I've never dealt with a toxicity before so I have no baseline.

 

[Mañ'O'Green]

What have you been feeding at?

 

[Kazman420]

Last feed was 658ppm (Hanna)

 

[SOOTDAWG]

Last feed was 658ppm (Hanna)

i usually dont start bloom nutes til i get some blooms forming after stretch is done...i continue my veg nutes through stretch....i could be blind...but i dont even see pre flowers.......i would do a calmag flush...and continue feeding back at 1/4 nutes and then adjustin accordingly.

 

[SOOTDAWG]

other than the clawing...that green you have is what will carry you through flower....alot of peeps go into flower with not too much green for photosynthesis.....(my solo cups).

 

[Bob's Auto's]

other than the clawing...that green you have is what will carry you through flower....alot of peeps go into flower with not too much green for photosynthesis.....(my solo cups).

That's so true! It's all stored energy the plant can survive on during bloom

 

[Kazman420]

i usually dont start bloom nutes til i get some blooms forming after stretch is done...i continue my veg nutes through stretch....i could be blind...but i dont even see pre flowers.......i would do a calmag flush...and continue feeding back at 1/4 nutes and then adjustin accordingly.

Hey @SOOTDAWG, thanks for the reply! Yeah I actually just re-discovered that Lifecycle of an Autoflower post by Muddy yesterday.

In regards to pre-flowers, maybe I'm not sure what that means exactly. I first noticed stigmas coming from the calyx's along the main stem on day 24. Shortly after there were a few appearing along the upper branches. Can't really see them in the pictures, not that there is much to see. I'm guessing that's not what a pre-flowers are?

I'm assuming a Calmag Flush = PH'd water with just CalMag in it? How many ml/ppm per gallon? I'm using GH CaliMagic which unfortunately has 1% nitrogen in it.

 

[ceys1]

hello can u say what giving ?
and inflow outflow ec please