Back Growing and First New Problem is White/Yellow Edges on New Leaves

mustangmaddi

mustangmaddi

Active Member
I've been out of it for awhile... got very sick again. :sad: I started growing Urban Poison from Nirvana and after a week of this poor little lady, I'm seeing yellow/white tips. I planted in Fox Farm soil and have her under the normal lights I usually use with great success. Is this overwatering? I haven't used any other nutes yet and my water's pH seems to be fine.
Any help would be greatly appreciated.
 

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ItsSaturday

ItsSaturday

Well-Known Member
Nute burn. Most FF Soil is very high in nutes and it's designed for plants later in growth - not really that good for seedlings IMO.
 
*BUDS

*BUDS

Well-Known Member
Good to see you back, now start feeding it its hungry. Also dont guess the ph make sure all feeds/waterings are 6.5 with a digital ph pen and adjusters.
 
*BUDS

*BUDS

Well-Known Member
ItsSaturday said:
Nute burn. Most FF Soil is very high in nutes and it's designed for plants later in growth - not really that good for seedlings IMO.
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No thats wrong, nute burn will be burnt edges(brown) not pale yellow and most leaves including the new growth will be affected, its lack of nutes bro.
 
mustangmaddi

mustangmaddi

Active Member
Uh oh... dueling info... not very helpful but the fact that I always use Fox Farm and never have had nute burn with the seedlings leads me to believe that maybe I should start with a light feeding. I'm using a pH pen that I regularly calibrate and the water is fine. I was almost thinking I was overwatering. Should I 'wait and see' a week or so, or will this lack of action kill this little girl? And thanks for the warm welcome from both of you. Nice to be back on the scene. ;)
 
mustangmaddi

mustangmaddi

Active Member
Just a follow up on the yellow leaves... I literally let Mother Nature right herself considering I was doing everything RIGHT and she didn't let me down. I now I have four lovely plants and the Urban Poison with the problem is growing sans yellow leaves. Thanks again for the input but perhaps next time I need to adopt a 'wait and see' posture for babies.
 
mustangmaddi

mustangmaddi

Active Member
oldaaer said:
In case your confused. You can not test soil per se for pH. You test the pH of the moisture in the soil. This means either using a pH meter specifically made for measuring soil pH or remove damp soil after adding nutrient water and lightly squeeze enough fluid from the soil and test its pH. Do the same test after watering with plain water. The pH should be nearly the same if the nutrients pH is not being effected by the soil. If that is the case then adjust the pH of the nutrient water just enough to bring the soils moisture into the desired range. Soil does have the tendency to lower the pH of the moisture in the soil so the pH of the nutrient water should be in the upper 6 to 7 range so that the soils moisture does not fall below the mid 6 range. With hydroponic the pH is kept in the 5.6 to 6.2 range. fatman
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Thanks oldaar..that what I thought but I never argue on here. Too many arguments in the world today! I think as long as I follow The Grow Store's suggestion I will probably be fine. They told me that during the Growth cycle the pH of the water should be at most between 6.0 and 6.5 using the FoxFarm nutes and in the Flower cycle, at about 5 weeks the pH should be about 5.7. The plants seem to be thriving so I think this is what I plan on sticking with for now. I did learn a valuable lesson... keep my BlueLab calibrator clean. After washing it in plain water with a little bit of dishwashing liquid, it was doing quite a bit better. Plus I recalibrate it every grow with the BlueLab pH calibration solutions. Seems to work for me at present. Thanks so much!
 
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