What do you guys think ?

For some of you guys who may have been following my last posts, You may have seen that my one plant is nut burnt or locked out and the other seems healthy. Every plant I have grown seems to grow healthy all the way to flower and then fails and burns during flowering. Both these plants have had the same treatment . But if you start to look very closely now at the healthy plant, The very tips are beginning to burn like how all the others did. I need some suggestions here . In coco , have been receiving good amount of run off . Water is good for ph . Nutrition I add a little lighter then recommended at the.momemt

Water more dont raise ec

Your room is to hot too

So water even more

Room is sitting at 25 C and 43 % humidity

It seems like the other plant may be starting to get screwed as well. That's how it happened to every other plant I've grown so far , 2 weeks into flower the leaf tops started to yellow , then
a few weeks later it's like the yellow plant u see In the pic which is 5 weeks into flower now . Was healthy all the way until then too

Fancyhuh101 said:

For some of you guys who may have been following my last posts, You may have seen that my one plant is nut burnt or locked out and the other seems healthy. Every plant I have grown seems to grow healthy all the way to flower and then fails and burns during flowering. Both these plants have had the same treatment . But if you start to look very closely now at the healthy plant, The very tips are beginning to burn like how all the others did. I need some suggestions here . In coco , have been receiving good amount of run off . Water is good for ph . Nutrition I add a little lighter then recommended at the.momemt

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Salt build up maybe

my pots clean I feed heaps salts

Fancyhuh101 said:

For some of you guys who may have been following my last posts, You may have seen that my one plant is nut burnt or locked out and the other seems healthy. Every plant I have grown seems to grow healthy all the way to flower and then fails and burns during flowering. Both these plants have had the same treatment . But if you start to look very closely now at the healthy plant, The very tips are beginning to burn like how all the others did. I need some suggestions here . In coco , have been receiving good amount of run off . Water is good for ph . Nutrition I add a little lighter then recommended at the.momemt

Click to expand...

Test the 1st bit of runoff

Was gonna say the same. Thats a lot of buildup on the pots. Caught my eye immediately

I don't know if that's salt or even a small light mold build up on the sides because they are always moist

PURPLEB3RRYKUSH said:

Test the 1st bit of runoff

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This.

Plus, "I use a little less than recommended" is an ambiguous EC number. A general nutrient line will be stronger because it's designed for a variety of crops most growers grow (tomatoes, eggplant, cucumbers), and those take a much higher EC than cannabis and a cannabis specific nutrient line will have cannabis EC numbers in mind with their recommendations, so it's important to know what the EC is going into the plant and what the EC of the runoff is instead of vague descriptions.

Anyone else have any ideas ?

I haven't really changed my feeding in donkeys years always hit them with pk 13 14 round that time week 4 5 or 6
Could be p or k but I'm only chiming in no expert like

Looks like it could be a deficiency more than nute burn. I used to have this same issue with every auto I grew. I fixed it by switching to photos and running a better quality cal-mag with added boron for the entire grow. Right now I'm getting issues in veg and it looks like it's because I started using canna Coco instead the brand I was running before. Coco can really screw with your nutrient balance and there's no easy fix for it. Next grow see if you can find Coco that's pre-buffered with Cal mag. For this run try lowering your base nute by 1/3 and then up the Cal mag and PK. Aim for an EC of 1.6 and feed 5 or 6 times per day to run off every time.

Fancyhuh101 said:

Anyone else have any ideas ?

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Deficiencies due to lockout or otherwise are so simple to correct quickly in unamended coco but you seem to keep ignoring it in the threads you've created.

Buy an EC or PPM meter and test both the EC going into the plant and the EC of the runoff over several fertigations and make the correct adjustment based on the readings. It's really that simple.

Doing anything else but the above is going to be at best an educated guess. Scientists with PhD's in botany will choose testing over gut instinct, but you're looking for hunches to solve it. I mean, good luck with that.

Another vote for lower EC. "A little lighter than recommended" is probably too high, especially with relatively low RH (when the RH is low, plants consume more water, but don't necessarily need more nutrients, so you have to feed at a lower concentration).

It's really annoying that the nutrients have a recommendation written on the label, but everything you hear from folks' personal experience says to feed around 1/2 or less of what is recommended...

I've cut down my nutrition per gallon 30% and seems to be running fine .

ec121 said:

Deficiencies due to lockout or otherwise are so simple to correct quickly in unamended coco but you seem to keep ignoring it in the threads you've created.

Buy an EC or PPM meter and test both the EC going into the plant and the EC of the runoff over several fertigations and make the correct adjustment based on the readings. It's really that simple.

Doing anything else but the above is going to be at best an educated guess. Scientists with PhD's in botany will choose testing over gut instinct, but you're looking for hunches to solve it. I mean, good luck with that.

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Thanks for the response brother . May have missed a post or just confused with so many mixed responses . But I will look into these meters . What reading would be ideal to see in the run off after its flushed a few times to know it's good to go ?

Fancyhuh101 said:

Thanks for the response brother . May have missed a post or just confused with so many mixed responses . But I will look into these meters . What reading would be ideal to see in the run off after its flushed a few times to know it's good to go ?

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Get it back to under 2.0 ec at runoff. You may be at like 8-9 ec