AK-47-Auto Yellow tip DAY 45

Hello!
I have a little problem with these plants, handling one and already appears another problem...
Here the link of my Previous issues not yet resolved:

https://www.rollitup.org/marijuana-plant-problems/785699-urgent-my-plant-dying-help-9.html

But i have another problem right now...
Yesterday I noticed 2 top buds that have become, bright yellow...
This morning i just put in my dwc a teaspoon of cal-mag powder, and now in the afternoon in noticed only 1 bud is still yellow... So, I treat correctly that I added a teaspoon of cal mag directly in my dwc???
Like i said in my upper post im using GH 3 part flora series, and have issue with slime atm... work in progress...
Got this setup for 1 day at rly low ph around 4.8, is that maby a cause of this bright yellow?
Can ezimes cause this kind of deff?



the rest of the tips look very nice:

Well they start rly fast to show sex, like on 3rd week...but true flowering has begun


2 week ago like on day 30...

im not a deficiency guy. im a newbie grower but you do know the leaves turn yellow in flower they suck all of the N out to help produce the buds...

usually the yellowing starts on the bigger leaves not smaller 1s, the last 3 pics are good first 2 seem to be getting to much light, if lights are pretty close to the tops back em up a bit,

Just read the whole post had to re edit , fix your ph bro try 5.3 the VERY LEAST it should be is 5.1 in Hydro

chiefsirbong420 said:

im not a deficiency guy. im a newbie grower but you do know the leaves turn yellow in flower they suck all of the N out to help produce the buds...

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Im pissed on autos lol... Im tottaly confused how they need nutes... so better feed them like they are veging not flowering all the time??
And in strains is alot of difference on nute uptake...
1st and last auto grow for me... :/
They are cute but ... they need tottaly different aproach...
And im noob on photos... so im super noob on autos
But on my 1st grow ever i do not have any problems with growing... only my problem was how to manage smell
Critical in rdwc setup...
And it was summer... 30c++ and 80%++ RH all the time... with no problems at all!!!!
Now with these autos i have perfect conditions 24C, 40%-50% RH and in DWC and soil <--This should make it easier "not for me"
BUT ALOT OF PROBLEMS!

STLbudz said:

usually the yellowing starts on the bigger leaves not smaller 1s, the last 3 pics are good first 2 seem to be getting to much light, if lights are pretty close to the tops back em up a bit

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YES! Light is about 20cm from tops... but i have cooltube and i cant feel hot with my hand even on 5 cm from it...
Can u bleach without heat, just to near light source??

Greensea said:

And it was summer... 30c++ and 80%++ RH all the time... with no problems at all!!!!
Now with these autos i have perfect conditions 24C, 40%-50% RH and in DWC and soil <--This should make it easier "not for me"
BUT ALOT OF PROBLEMS!

Click to expand...

wouldnt say that your ph is super low bro your plants are looking nice btw except those 2 buds, but the ph could have alot to do with those problems if they been that low for a while

Yeah bro you can bleach with out temps being hot! have you been misting them?

STLbudz said:

wouldnt say that your ph is super low bro your plants are looking nice btw except those 2 buds, but the ph could have alot to do with those problems if they been that low for a while

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Oh sorry i didnt mentioned...
For two days, I was not at home when I came back there was very little water in the tank, pH was low, and PPM fell for 200.
I immediately adjusted to 5.8, but it was so at least for one day.
Ph is now stable... im adding 3L of fresh water x day with PH at 5.8. And PPM is droping fast... 70-100 x day
So the PH was 4.8 for max 1 day....

STLbudz said:

Yeah bro you can bleach with out temps being hot! have you been misting them?

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1 Week ago last mist... but in dark period...

they look good either way man, the yellowing could be from that, but to me it looks like the light caused it , i cant really see the plant overall and light n stuff so cant really say

Now that im looking at it are those two buds from same plant? looks like they got nute burned cuz if it were the light it would be on other parts of plant and not just 2 specific buds, the whole plant does have burned tips and it could be that most of the uptake of nutrients whent to those buds and couldnt handle nute uptake , looks like nute burn to me for sure , did it ever get hot , such as temps

MY last ress change i push ppm from 700 to 1000... and yea maby these buds didnt handle in a combination with close light ...

If you are using a HPS light, you have it too close mate. That is light bleaching, I have found that I need to raise the HPS lights up nearly twice as much as MH of the same wattage or that happens.
If it was a PH or nute related problem you would expect it to affect all the growing tips, not just the tallest ones.

Yea u guys have right!
I think is light cos only on 1 plant showing yellow tips, but they are in same bucket... Other 3 not showing any kind of deff, but they are at same height, same bucket lol
I raised light about 5 cm more now is about 20 cm from tops... Will see... Im trying to keep light close becouse is cold this days, but i set up a electric heater so temp is now 17c-22c and i can pull up the lamp.
Stay tuned!
Update soon...

Errm yea forgot to mention, I've moved them 5 days ago from LED to HPS...

Update... seems better to me... rised up light...

Think i got nice recover here
9 DAY AGO


TODAY!!!


some other buds...



All my 4 babies in 1 20L dwc bucket...

nice! (12char)

lushgreen said:

If you are using a HPS light, you have it too close mate. That is light bleaching, I have found that I need to raise the HPS lights up nearly twice as much as MH of the same wattage or that happens.
If it was a PH or nute related problem you would expect it to affect all the growing tips, not just the tallest ones.

Click to expand...

Thnx man!!!



you deserve


+ REP !