Late flowering deficiencies

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Nugsoverhugs

Member
So this is my first grow. And I just started week 6 of flowering. I’ve done plenty of research and have tried my best to do what I can.

So far I have just been giving it plain reverse osmosis water for a couple waterings. And just yesterday I gave it 1/2 tsp fox farm flower nutes and 1 tbsp of grow big as well has some cal/mag.
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The leaves started out as yellowing between the veins and then turned brown and crunchy. It started in the middle of the plant and started growing upwards. Lately I have been noticing some of the leaves turning purple as well. I thought it was phosphorus deficiency and adding the nutes would fix that. But it’s only been getting worse. Not sure what to do
 
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Nugsoverhugs

Member
-Runoff is 6-6.1
-Water ph with nutes was like 6.1
-Plain water was around 7 which should have helped with magnesium I thought
-not sure on the EC
 
Bukvičák

Bukvičák

Well-Known Member
Nugsoverhugs said:
-Runoff is 6-6.1
-Water ph with nutes was like 6.1
-Plain water was around 7 which should have helped with magnesium I thought
-not sure on the EC
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Rise your pH to 6,8 for runoff at least 6,3 or higher. Looks like you have Ca issues kicking other nutes out.
 
Bukvičák

Bukvičák

Well-Known Member
In my eyes you will need to rise up your soil pH to prevent lockout. Try to get Olympus pH up from Nectar of the Gods...
 
N

Nugsoverhugs

Member
I
Bukvičák said:
In my eyes you will need to rise up your soil pH to prevent lockout. Try to get Olympus pH up from Nectar of the Gods...
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don’t have a EC meter but can look into getting one. My biggest worry is just how much this will affect harvest since it’s slowly creeping up the plant. My tap water is 8.5 and I’m using reverse osmosis which is around 6.3. Is it cool to mix them?
 
Bukvičák

Bukvičák

Well-Known Member
Nugsoverhugs said:
I

don’t have a EC meter but can look into getting one. My biggest worry is just how much this will affect harvest since it’s slowly creeping up the plant. My tap water is 8.5 and I’m using reverse osmosis which is around 6.3. Is it cool to mix them?
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Again EC will tell you if you need to use RO water... I have never had issues with my tap EC 0,58 so can not tell you because never used RO. When RO is around 6,3 how much is it after adding nutes? Do you pHed it than?
 
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Nugsoverhugs

Member
So it’s spring water that goes through RO. Ph varies a little. But after adding nutes, it’s always around 6. I’m using fox farm soil so I didn’t think I had to worry too much. The weird thing is, i have to water it daily because it constantly dries out. Maybe that is flushing a lot of the nutes out too
 
Queen2Green

Queen2Green

Well-Known Member
I just skimmed through but agree with what Bukvicak is saying. I was gonna say locking out potassium but perhaps Ca too. Ca is usually more in the middle of the leaf rather than edges like I seen on one pic. FF is notorious for ph issues, I use recharge to allow for a wider range due to that. I also ph my water to 7.0 and still check my ro, which is often dropping down and I have to adjust water ph up for a cycle to keep it in balance. Molasses makes ph go down too, I think you mentioned using that. I'll read back through.
 
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Nugsoverhugs

Member
Queen2Green said:
I just skimmed through but agree with what Bukvicak is saying. I was gonna say locking out potassium but perhaps Ca too. Ca is usually more in the middle of the leaf rather than edges like I seen on one pic. FF is notorious for ph issues, I use recharge to allow for a wider range due to that. I also ph my water to 7.0 and still check my ro, which is often dropping down and I have to adjust water ph up for a cycle to keep it in balance. Molasses makes ph go down too, I think you mentioned using that. I'll read back through.
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So I’m assuming that the nutrients is still in the soil. So by this point, there shouldn’t be a need to add more before harvest, correct?
 
Queen2Green

Queen2Green

Well-Known Member
Nugsoverhugs said:
I also have it 1 tsp molasses per gallon on some of my plain water days
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Molasses drops your ph. My water comes out at 8.5 and molasses drops it to 7.3. So if you're ph water then adding molasses, ph is much lower than you think.

Nugsoverhugs said:
Ok thanks. Better to know now than never. Based off of these pics, do the buds look ok for 5 weeks?
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Are you counting from when flipping lights? It's best to take pics with natural light. I was going to mention that earlier. Then we can see the symptoms better and the actual color.
 
Queen2Green

Queen2Green

Well-Known Member
Nugsoverhugs said:
So I’m assuming that the nutrients is still in the soil. So by this point, there shouldn’t be a need to add more before harvest, correct?
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Need more info and better pics. I def wouldn't add any until you get the issue diagnosed and under control. I can see some burnt tips and looks rather green (need pic without lights, natural) so has enough. Need to find out your rootzone ph.
 
N

Nugsoverhugs

Member
Queen2Green said:
Molasses drops your ph. My water comes out at 8.5 and molasses drops it to 7.3. So if you're ph water then adding molasses, ph is much lower than you think.



Are you counting from when flipping lights? It's best to take pics with natural light. I was going to mention that earlier. Then we can see the symptoms better and the actual color.
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I gradually switched the lights over so I saw
pre-flowers on the first week. And this sucker is huge, it’s pretty hard to take it out of the tent
 
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