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Red Underside of Leaves

Discussion in 'Sick Plants and Problems' started by tokin-guitarist, Mar 27, 2012.

  1. What type of medium; soil or hydro? SOIL
    What strain? GDP
    How old are the plants? 1.5 MONTHS
    What type of lights and how many watts? 600 HPS
    How far from the lights? 20 INCHES
    What is your watering frequency and source of water?
    2/WEEK. 150 PPM TAP WATER. 6.7 PH
    What, how much and when was it fed? NPK?
    Every watering 1/4 teaspoon Jacks Classic

    Plant used to be beautiful. Then the top leaves went yellow. The yellowing has slowing continued down plant. New leaves are much more green than the yellow leaves though. The underside of yellow leaves are red?
     

    Attached Files:

  2. Test the pH of your soil asap. You're also watering a bit too often, but that isn't the main problem. Wet the soil all the way through at each watering and then wait for about the top quarter of the soil to be completely bone dry before watering again. Does the plant droop after waterings?
     
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