Late flowering deficiencies

N

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.
1777ACB5-31C7-49BE-AA05-03F9D93BFD05.jpegEBB0628E-8CDC-4B54-93C4-1EDBD53BF35B.jpeg0677A6A8-36FC-4FE4-B2DA-23AFC88489B5.jpeg3E50F42C-98BA-4D07-87D9-8CC3C06962C7.jpeg04C34B30-6896-42F1-8CAA-E284179D53BA.jpegimage.jpg
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
 
-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
 
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
Click to expand...
Rise your pH to 6,8 for runoff at least 6,3 or higher. Looks like you have Ca issues kicking other nutes out.
 
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...
 
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...
Click to expand...
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?
 
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?
Click to expand...
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?
 
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
 
Ok thanks. Better to know now than never. Based off of these pics, do the buds look ok for 5 weeks?
 

Attachments

  • image.jpg
    image.jpg
    2.5 MB · Views: 18
  • image.jpg
    image.jpg
    2.1 MB · Views: 17
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.
 
Last edited:
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.
Click to expand...
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?
 
Nugsoverhugs said:
I also have it 1 tsp molasses per gallon on some of my plain water days
Click to expand...

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?
Click to expand...

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.
 
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?
Click to expand...

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.
 
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.
Click to expand...
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
 
You must log in or register to reply here.
Back
Top