Jacks 321 yellowish leaves

canope

canope

Well-Known Member
Im following jacks 321 and my leaves are all lime green/yellow, excepet the ones getting less light. Im at 1100ppm nute and 1500ppm co2, running under leds in soil
 
E

Efbespn

Member
More details would be nice. Ph? RO? Flower? Veg? Temp? RH?
Had the same problem. Made a few adjustments.
 
NukaKola

NukaKola

Well-Known Member
I’m thinking possible light stress since the larger plants are effected. The larger plants could also be getting deficient I suppose but I’m not a soil grower so 1100PPM already seems super high to me.
 
farmerjoe420

farmerjoe420

Well-Known Member
canope said:
Im following jacks 321 and my leaves are all lime green/yellow, excepet the ones getting less light. Im at 1100ppm nute and 1500ppm co2, running under leds in soil
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you have any pictures ? 1100 ppm seems low for 321. Are you using exactly 321 or full strength? Also, are you using tap water ? If so, what is the ppm of your water ? How about brand of soil ?
 
canope

canope

Well-Known Member
farmerjoe420 said:
you have any pictures ? 1100 ppm seems low for 321. Are you using exactly 321 or full strength? Also, are you using tap water ? If so, what is the ppm of your water ? How about brand of soil ?
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That's for 1000L, no idea about soil brand since I buy mature plants, long story. Using tap water, iirc it's around 90ppm
15-0-0 jacks: 660g 2.5g
5-12-26 jacks: 950g 3.6g
Epsom salt: 317g 1.2g
 
canope

canope

Well-Known Member
farmerjoe420 said:
you have any pictures ? 1100 ppm seems low for 321. Are you using exactly 321 or full strength? Also, are you using tap water ? If so, what is the ppm of your water ? How about brand of soil ?
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This pic is from like 5 days ago and it's not color corrected so it's hard to tell, but plants that are getting the most light are turning super yellow and the ones getting less light are healthy green
Screen Shot 2020-10-12 at 5.59.01 PM.png
 
canope

canope

Well-Known Member
TintEastwood said:
Interesting. For those affected.. It's the entire plant thats a lighter green?

Flippin sweet grow!
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Yes entire plants, the ones that are on the edge of the light spec are doing great. I feel like it could be a N defficiency, I'm trying to troubleshoot this with adding some 15-0-0 to 4 very yellow plants, I added maybe less than a gram to each plant thru top feed and once my regular irrigations sprays it will dissolve it and and hopefully I will notice a change, I started 3 days ago but still no change. Next step is recomp jacks 321 to have greater N and keep my ppm at arounf 1100
 
TintEastwood

TintEastwood

Well-Known Member
Good strategy with the calnit.

Hope they start to improve. If you have a journal I need to find so I can follow.

Oh ya. Those leds are sweet. Have you ran under them in the past? I just started using them, strips, and quickly learned to respect the dimmer knob. Stressed the F outta the plants initially. Doh
 
farmerjoe420

farmerjoe420

Well-Known Member
canope said:
Yes entire plants, the ones that are on the edge of the light spec are doing great. I feel like it could be a N defficiency, I'm trying to troubleshoot this with adding some 15-0-0 to 4 very yellow plants, I added maybe less than a gram to each plant thru top feed and once my regular irrigations sprays it will dissolve it and and hopefully I will notice a change, I started 3 days ago but still no change. Next step is recomp jacks 321 to have greater N and keep my ppm at arounf 1100
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If your noticing a absence in yellowing on the plants getting less light , It’s probably the light intensity. It’s hard for me to tell from the picture but do you think you have enough space between the lights and canopy ?
I had a issue myself when I first got these DE lights. I see lots of folks have that issue with LED’s because there so damn bright LOL. For my situation It was just too much for the plants. I raised my lights up all the way and the yellowing stopped and they greened back up.
I would try dimming the light some or maybe try upping the calnit like you mentioned. Your setup looks badass by the way !!
 
canope

canope

Well-Known Member
farmerjoe420 said:
If your noticing a absence in yellowing on the plants getting less light , It’s probably the light intensity. It’s hard for me to tell from the picture but do you think you have enough space between the lights and canopy ?
I had a issue myself when I first got these DE lights. I see lots of folks have that issue with LED’s because there so damn bright LOL. For my situation It was just too much for the plants. I raised my lights up all the way and the yellowing stopped and they greened back up.
I would try dimming the light some or maybe try upping the calnit like you mentioned. Your setup looks badass by the way !!
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Thanks, and yes but that's why I got the lights because they are bright af ahah so I really want to use it to the full potential. I'll remake a recipe with higher calnit and hopefuly that fixes it
 
R

RonnieB2

Well-Known Member
Could it be the lights? I use Jack's 321 and use a few other things with it. A good amino acid with silicates, Neptune's harvest 0-0-1, humic acid and growers recharge. My ph is naturally stable though and ppm is 22 from the tap. I had some leaves getting spots but found it was an unlevel spot in my canopy and it was too much light
 
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