Browning, yellowing leaves - progressing quickly/losing whole plants!

[mm2100]

I have many plants affected - leaves are turning brown between veins out to the edges then progressing to yellow and dying completely. Starts at the bottom leaves and works its way up the affected plants until the whole plant is yellow and weak. Buds are dull. This is annihilating my garden.

The first two pictures show how it starts. The third and fourth pictures show what happens not long after the browning begins. PLEASE help me figure out what's going on here. I need to put a stop to this like right now.

 

[The Gram Reaper]

What are your grow conditions like? How often are you watering? Are you giving them nutrients? How close are your buds to the light? When did this start? What grow medium?

 

[Hank Mardukas]

Yikes! Something floating around in the air??

 

[The Gram Reaper]

Do your yellowed buds have webbing/spores on the inside?

 

[Hank Mardukas]

And that dirty gym sock smell when you open the door....

 

[mm2100]

What are your grow conditions like? How often are you watering? Are you giving them nutrients? How close are your buds to the light? When did this start? What grow medium?

The room is clean and well attended. They're in coco/Basement Mix and are watered every other day-ish, and we use Veg + Bloom. We did just switch from using a mix of products to using only Veg + Bloom's line. That's the biggest change, and it does seem like this started or at least became aggressive when that changed. It's been about a week that this has started to become prevalent - though not all plants are affected and the affected plants aren't necessarily in close proximity. They shouldn't be too close to the light. We keep them a little smaller to accommodate a not very tall ceiling. We've been running this room this way for quite a while, and this is totally new.

The really frightening pictures show the most intense representation of what's happening - and that was on a plant that a week ago was healthy from genetics we know and love. I'm attaching a picture of a leaf from a plant that is just starting to show the symptoms we're struggling with.

 

[mm2100]

Yikes! Something floating around in the air??

Ventilation and environmental controls should be on track, and I don't notice an out of the ordinary smell coming from the room.

 

[hotrodharley]

The room is clean and well attended. They're in coco/Basement Mix and are watered every other day-ish, and we use Veg + Bloom. We did just switch from using a mix of products to using only Veg + Bloom's line. That's the biggest change, and it does seem like this started or at least became aggressive when that changed. It's been about a week that this has started to become prevalent - though not all plants are affected and the affected plants aren't necessarily in close proximity. They shouldn't be too close to the light. We keep them a little smaller to accommodate a not very tall ceiling. We've been running this room this way for quite a while, and this is totally new.

The really frightening pictures show the most intense representation of what's happening - and that was on a plant that a week ago was healthy from genetics we know and love. I'm attaching a picture of a leaf from a plant that is just starting to show the symptoms we're struggling with.

Appears to be some type of blight by the appearance of this leaf.

 

[mm2100]

Do your yellowed buds have webbing/spores on the inside?

No signs of webbing. A couple of plants look like they have a little thrips action - and we have gotten several buggy bags of soil from a local grow store. But that damage seems to be independent of these symptoms.

 

[mm2100]

Appears to be some type of blight by the appearance of this leaf.

Right on - this seems the closest to what we're dealing with! Have you ever had to treat for blight? We've gotten several bags of buggy soil from a questionable local grow store. It's the only one within an hour's drive of our rural area unfortunately. I wonder if we got this from there too.

 

[The Gram Reaper]

What are you night temps? Do they fluctuate more than 10 degrees from the day temp?

Not trying to bombard you with questions.

 

[The Gram Reaper]

Maybe your new nutrient is heavily lacking something the old nutrient mix had? Are you now lacking beneficial bacteria?

 

[SPLFreak808]

What exactly did you feed? Something with high K?

 

[hotrodharley]

Right on - this seems the closest to what we're dealing with! Have you ever had to treat for blight? We've gotten several bags of buggy soil from a questionable local grow store. It's the only one within an hour's drive of our rural area unfortunately. I wonder if we got this from there too.

Check this out.

http://ipm.ucanr.edu/PMG/PESTNOTES/pn7481.html

 

[Bernie420]

I have many plants affected - leaves are turning brown between veins out to the edges then progressing to yellow and dying completely. Starts at the bottom leaves and works its way up the affected plants until the whole plant is yellow and weak. Buds are dull. This is annihilating my garden.

The first two pictures show how it starts. The third and fourth pictures show what happens not long after the browning begins. PLEASE help me figure out what's going on here. I need to put a stop to this like right now.

at what ppm are you feeding these at??? If you dont know thats where you fugged up you are feeding tooo hot or the coco crap is too hot now that you have been feeding at x ppm and the pot has accumulated all these nutes and its too hot.

In laymens teem ...you burnt your shit up

Flush your pots and then flush your pots and then do this a few more times. and then when you done with that flush your pots. With clean water at 6.5 ph.
Renute at about 600 ppms and add microbes to it.

Feed water feed water feed feed water feed water feed water feed feed water. like 600 ppms or so with the feed. throwing a good flush and renute in the middle of flower isnt a bad thing and highly recommend doing that. A little microbes once a week. Not feed feed feed feed feed feed feed.

You weakest plants went first and the stronger ones are trying to survive but are not far behind. The burnt up ones aint coming back cut and toss or run an experiment on them to see what happens. or just let them go and see what happens but they aint coming back in any way shape or form.

Dont do this again.

 

[mm2100]

So - I think it's a boron deficiency. Have any of you guys dealt with that before? Should I flush them or feed them?

 

[Redwood Ninja]

That's why I grow organic.

 

[xtsho]

"We did just switch from using a mix of products".

What were those products? Those plants look burned up from overfeeding.

 

[OldMedUser]

TSB man. Toxic Salts Buildup. Real bad.

Those buds are gonna snap, crackle and pop when lit up.

Cut your nutes to half or less the next crop and if using hard water fix that too. I don't mean pH it better but replace it with RO or at least get the ppm down to 100 or less by diluting with RO.

You can flush forever and that won't get the salts out of the plant but will slow the progression.

Good luck eh.

 

[Bernie420]

So - I think it's a boron deficiency. Have any of you guys dealt with that before? Should I flush them or feed them?

are you joking of course its a boron deficiency I wouldnt flush them I would feed the fuck out of them till they look like .........well your plants. Burnt to shit.