Help pleaasee! Yellowing and spots

Last week she had great color, now the leaves are becoming yellow and im starting to see brown spots.
The other 2 seem happy, its just one, and the problem started just a week ago. She is at mid week 6 and is a 55-65 days strain (Lemon Og Candy) , im feeding her sensi bloom at 50% strenght because i saw a few leaves clawing and some burned tips and Big Bud at full strengh( could it be P excess?). She is in happy frog soil under "600 watt" led, wich is actually like 130 true watt. Temps are 22-26 c and rh is at 35-45%. She is deteriorating pretty fast i think, but something weird is that she has 4 main colas(i topped twice) and 2 side colas, well, the 2 side colas look healthy, it is just the top colas and only the fan leaves, the sugar leaves look nice.
Any help is aprecciated!! Sorry for my writing, english is not my native language.

Not saying for sure this is the problem but make sure its not bud rot . I noticed that using leds for the first time, they are allot cooler than hps . And st about 5 to 6 week in flower time the buds especially ogs and heavy indices can get it. I found a bit on one of my denser plants that was more yellow and purple looking. Just a thought as it was my first time getting mold in 10 yrs that wasn’t powdery looking ... it starts inside the buds so it’s hard to see

Maybe it’s the beginning of bud rot? Not sure but the brown freckles and early yellowing can be symptoms

You are seeing a few different deficiencies. N, P, Mg. Looks like you just need to up the nutes. If you have been giving 50% doses then this makes sense. Give a few full doses over the next couple waterings.

323cheezy said:

Not saying for sure this is the problem but make sure its not bud rot . I noticed that using leds for the first time, they are allot cooler than hps . And st about 5 to 6 week in flower time the buds especially ogs and heavy indices can get it. I found a bit on one of my denser plants that was more yellow and purple looking. Just a thought as it was my first time getting mold in 10 yrs that wasn’t powdery looking ... it starts inside the buds so it’s hard to see

Maybe it’s the beginning of bud rot? Not sure but the brown freckles and early yellowing can be symptoms

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How could i know if it is bud rot?? I really hope its not =(

R Burns said:

You are seeing a few different deficiencies. N, P, Mg. Looks like you just need to up the nutes. If you have been giving 50% doses then this makes sense. Give a few full doses over the next couple waterings.

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Thanks! Even if i am seeing some burnt tips and some claws in some leaves?

Thedyingpistil said:

How could i know if it is bud rot?? I really hope its not =(

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Think your okay I wouldn’t worry too much .. just keep an eye on any copper looking buds .... at this points it’s still early and might just need some nutes .. but using allot of nutes can also cause problems lol.
Keep us posted

323cheezy said:

Think your okay I wouldn’t worry too much .. just keep an eye on any copper looking buds .... at this points it’s still early and might just need some nutes .. but using allot of nutes can also cause problems lol.
Keep us posted

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Ok thank you! I'll give her a bigger dose of nutes next feed then

Thedyingpistil said:

Thanks! Even if i am seeing some burnt tips and some claws in some leaves?

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Can have burnt tips from mag deficiency. Claw like leaves can be from overwatering, rootbound plants, light intensity, too. Don't know the whole history here, but the yellowing and brown spots and purple leaf stems are from deficiencies. Could have overfed at an early time and stopped for too long. This is a very hungry period. Might want to make sure that your ph is in the correct range. Wild ph fluctuations are often responsible for plants being overfed and underfed in the same timeframe.

I think you first of all should check your runoff pH and/or EC value to get us something to work with.

Wastei said:

I think you first of all should check your runoff pH and/or EC value to get us something to work with.

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Ph runoff is at 6.3 so i dont think is that =/

Thedyingpistil said:

Ph runoff is at 6.3 so i dont think is that =/

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Then I think it's probably root issues because of low temps and/or low lighting.

As usual most will say mag deficiency with yellowing leaves, burnt tips is usually a sign of over feeding, but allot of times it just happens for some odd reason. But think your on a good path. Sure your lights aren’t too close ?

Thedyingpistil said:

Ph runoff is at 6.3 so i dont think is that =/

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Ph should be 6.8, in soil, during flower. At least part of your problem. Get this up before adding too much nutrient.

Update,

So 4 days ago i gave her a watering with epsom salts, today i gave her a feeding of sensi bloom at 75% strength and big bud at full strength. I will leave 3 pictures wich are 1 week apart, the most yellow one is from today. She's now begining week 7 since i saw pistils wich was 1 week after 12/12 switch. She's a 9 week strain according to the philosopher seeds website so she has still 3 more weeks to go at least. Do you guys think she will make it to the end?

Dude they look great maybe a bit early to yellow but one of my best strains yellowed first ... I was scared at first too .
so hey be happy
I’d cut the dying one off tho .

323cheezy said:

Dude they look great maybe a bit early to yellow but one of my best strains yellowed first ... I was scared at first too .
so hey be happy
I’d cut the dying one off tho .

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Thanks man, i really hope you are right, i just feel she is yellowing too early and too fast. The weird thing is that the two side buds that are a little lower in height compared to the 4 main tops are perfect green as you can see in the pictures. That made me think that it was the lights too close, but at 130 true watts Led i really doubt it can stress the plant so much, plus the yellowing started from the buttom and only in those 4 main tops, not the side buds.