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 oscortega
Stranger
Registered: 08/04/09
Posts: 1
Last seen: 15 years, 3 months
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 Yellowing leaves 
#259519 - 08/04/09 12:59 PM (15 years, 3 months ago) |
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My leaves are yellowing more in the middle of the plants. I have eight plants a little over three weeks old. Everything has been going just fine until I woke up this morning to greet my eight friends and they had yellowing. I started a new nutrient mixture in my reservoir yesterday with a ppm of 900 from my last mixture which was 500ppm also with a pH of 5.6. my pH is a steady 5.6. I feed with a drip system of two mins. every three hours in Rockwool. This feeding has worked fine so far until I noticed the yellowing this morning. Is this a Nitrogen or some other deficiency? Or over neutralizing? Because I really don't think it's over watering. Please help...
   
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Ojom
Registered: 04/20/08
Posts: 333
Last seen: 9 years, 5 months
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Re: Yellowing leaves [Re: oscortega]
#259871 - 08/04/09 11:22 PM (15 years, 3 months ago) |
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Do you have mold on top of your rockwool? Also does your PH drift at all?
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Integra21
Up and coming Farmer
Registered: 05/01/09
Posts: 784
Last seen: 11 years, 6 months
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Re: Yellowing leaves [Re: Ojom]
#260040 - 08/05/09 11:40 AM (15 years, 3 months ago) |
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a couple of things. It looks like a N deficieancy. As the plants grow, you want to increase your ppm. You should keep it at your 900 increase for at least a couple of days and if things are improving, your heading in the right direction. Also, 5.6 is obviously in the acceptable range, but try upping it to 5.8 for a week and see how they like it. that is the magic number for my girls.
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