1. Dismiss Notice
  2. Dismiss Notice
Update About Advertising on Grasscity Important: A New Chapter for Grasscity

Brown spots between leaf veins

Discussion in 'Sick Plants and Problems' started by Vegetablebicycle, Dec 27, 2019.

  1. #1 Vegetablebicycle, Dec 27, 2019
    Like the title says I am having an issue with brown spots between leaf veins on the newer fan leaves on my plants.

    What type of medium; soil or hydro? Soil
    What brand and type of soil? Fox farm Ocean, with some cow manure, pear lite, worm castings
    Indoors or outdoors? indoor
    What strain? maui waui
    How old are the plants? second week of flower
    What type of lights and how many watts? Electric sky 300 in a 2x4 tent
    How far from the lights? about 2 and a half foot.
    What is your watering frequency and source of water? RO water with half doses of organic blue planet grow nutrients, with liquid seaweed, ph'd to 6.7-6.9. watering about a gallon or so per plant every 2-3 days.
    What, how much and when was it fed? NPK?
    What is the medium/runoff pH and PPM if in hydro?
    What are the temps and humidity in the room? temp is 70-72 lights off and 80-84 when on.
    What size pots? 7 gallon fabric pot
    Any bugs? Look real close. no pests
    Any other pertinent info?. Just did a straight RO flush on the plant ph'd to 6.8 with no nutrients, IMG_20191226_232822.jpg IMG_20191226_232809.jpg IMG_20191226_232817.jpg IMG_20191226_232822.jpg IMG_20191226_232809.jpg IMG_20191226_232809.jpg in case if its nutrient lockout. Not sure what else to try. I am worried because I am noticing its happening to most of the newer leaves and I see it spreading to more of them :(
     
  2. #2 Calyx-o, Dec 27, 2019
    this looks like a calmag deficiency to me.
     
  3. #3 Spanish@rcher, Dec 27, 2019
    It’s phosphorous deficiency mate.
    I’m a hydro grower so no idea how you go about fixing it or why it happened but that’s what the symptom is.
     
  4. #4 gdecessus, Dec 27, 2019
    I had the same problem in my Northern light. I was growing in coco and I wasn't watering until runoff properly for a while and it got a nute lockout, I made a 400ppm solution and flushed the plant until the ppm on runoff was 500ppm from 1200 (5 week of flower) this fixed the problem straight away for me. Also ph from 6.2 to 5.8

    Sent from my Mi A3 using Grasscity Forum mobile app
     

Share This Page