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This is my 2nd attempt on growing and I was having some problems. I Have two plants setup in a SCROG growing method. They are grown in a deep water hydroponics system. Also they are currently under a 250 MH and a few floros. I was having trouble with a browning on the edges of the leaves, and some small yellow spots. The plants are a mostly sativa strain, and have been flowering for 3 weeks. I donâ??t know what I need to do with them, and am looking for advice.
From just looking at the pics and spot ID'ing, it looks like either a Potassium or Calcium deficiency....but I dont know the situation
im no expert... But Im pretty sure those tips of the Fan Leafs.... Are pointing up..
Im almost positive that is a sign of heat stress. What are your Temps?
Next to that I'd say somthing is being locked out of your plants. Have you made sure your PH is in Check?
As well you should try and get a HPS as opposed to a MH for flowering, Or make sure all you CFLs are warm bulbs..
Cool Whites for Veg,, Warm Lights for flowering...
keep us POsted!
kd
your leaves curling is heat or humidity stress,the yellowing spots and edges mn dif i would cage my res and check p.hor lower p.h:thumbsup:
The temperatures have been in the 80s with the light on, and cooler when their off. I have checked the PH and its right. The humidity is around 40 percent which is low shouldnâ??t be too low. For the light I do have a few warm CFLs. I donâ??t know if this matters, but the car taker is using distilled water. Thanks for all the responses I will keep you all posted.