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Chrisgrowbud

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Yellowing from the middle of leaves ? About week 8 in flower
 

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IMHO....that looks like a cal-mag def

are you using a cal-mag supplement
I'm not. I'm trying to cut out all N because ive been told my plant look to have too much N. And the only cal mag I do have is 4-0-0 its sensi cal. I think im week 8. I thought i was in week 9 but still producing tons of white hairs. The base nutes I did have her on part a was 3-0-0 and part b is 2-4-8. So im also trying to figure out have to only feed her pk. With my base nutes its not possible. Posted a pic of my bud if you have any idea of how much longer i should go id appreciate it.. I flipped to flower dec17th . buds started forming Dec 29th I forgot to log when strech started and stopped
 

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Ive only been giving it phd ro water and a tiny bit of beastie blooms for pk. It's 0-50-30. And I'm talking like less than 1/4 tsp. For the past 2 feedings.
 
I'm not. I'm trying to cut out all N because ive been told my plant look to have too much N. And the only cal mag I do have is 4-0-0 its sensi cal. I think im week 8. I thought i was in week 9 but still producing tons of white hairs. The base nutes I did have her on part a was 3-0-0 and part b is 2-4-8. So im also trying to figure out have to only feed her pk. With my base nutes its not possible. Posted a pic of my bud if you have any idea of how much longer i should go id appreciate it.. I flipped to flower dec17th . buds started forming Dec 29th I forgot to log when strech started and stopped
Your leaf tips look pretty good. You have a bit of headroom on N concentration, and I’m betting the Ca/Mg benefit outweighs making your mix a little hotter. Ymmv
 
Your leaf tips look pretty good. You have a bit of headroom on N concentration, and I’m betting the Ca/Mg benefit outweighs making your mix a little hotter. Ymmv
Good to know. Maybe I'll continue with a light feeding of regular nutes to start . i thought my tips were fucked so ive been trying to cut back.
 
Your leaf tips look pretty good. You have a bit of headroom on N concentration, and I’m betting the Ca/Mg benefit outweighs making your mix a little hotter. Ymmv
Because my base nutes do contain cal mag. So it makes since that this started happening after i stopped feeding.
 
Good to know. Maybe I'll continue with a light feeding of regular nutes to start . i thought my tips were fucked so ive been trying to cut back.
In week 8 you’re in the home stretch.
If you really want to avoid N, I can suggest two options.
You can add some garden-grade gypsum powder to your diluted nutrient. You’ll need to do the math however on your target Ca ppm increase and convert that to grams/ liter of gypsum.
The other is to make a calcium acetate solution from lime or eggshell + vinegar. Again you’ll need to calculate
a: how much Ca will dissolve in 5% vinegar,
b: how much to add of this to hit a target of x ppm Ca.
I recently posted some numbers on this iirc. I’m gonna go look for that now.
 
Found this, posts 6 and 7

 
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