Leaf problem

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My bottom leaves have turned yellow, the middle leaves are starting to get too
Someone who knows what the problem is?
Imagine a nutrition too short? but which?

Give no power supply, normally there would be enough in the soil for two months
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Im gonna see about getting this moved to the infermary....hows your ph. ph out can cause lock outs wich is causes deficiacy....

135209d1296842079-ph-potential-hydrogen-manual-polled-ph-vs-uptake.gif


Rough Calculation Guide:
Here's some good info on ph.....
If your runoff pH is higher than your starting pH, use this equation to determine your soil pH:*
Soil pH = Runoff pH + Difference

If your runoff pH is lower than your starting pH, us this equation:
Soil pH = Runoff pH - Difference.

For example, say your the starting pH of your solution before it goes in is 6.5 and the pH of your runoff is 7.0. The difference is +0.5, so using the above equation:
Soil pH = 7.0 + 0.5*
Soil pH = 7.5

If your starting pH is 6.5 and your runoff is 6.0, your difference is -0.5 and using the above equation:
Soil pH = 6.0 - 0.5
Soil pH = 5.5
 
type of soil, age, ph, lights, nutes etc?
 
Hi guys thx for respond so quickly

Problem one, dont have a ph meter
But have a time ago my tap water can measure and i have pH 6.8

I use neutral soil for indoor plants and use hydrograins on the bottem
Some info on the bag
PH 5-6.5
EC 46mS/m
NPK 14-16-18
Nutrition for two months

Plants are 30 days old,stand under 200w cfl 2700k red,2.5 gallon pot,dont use nutes,average temprature 70F
room humidity 65%

Plants in a closet in my room, I noticed that a lot of dust floating around here maybe that is a problem.
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Perhaps to notice?? my upper leaves curl
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check out my report for more picshttps://www.autoflower.org/f44/my-autoflowers-2013-a-17386.html
 

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Just had this happen to mine, lots of twisted leaves. I flushed them for 2 days and now all good. Looks like the same issue, to much food. I could be wrong, mine were still green just twisting.
 
Temp and H2O

70 is a little low for temp. Shoot for 78. Also how often are you watering? You may be over or under watering. Either can have this effect. :peace:
 
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Seems that the plants are recovering.
Have water them from below last week maybe they just not enough to absorb nutrients?
Now I have given them above water along seems solved.

Thanks for assisting with my sick plants, there were a few interesting post
 
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