Spots on first set of fan leaves?

Discussion in 'First Time Marijuana Growers' started by Dgerbs, Jun 22, 2019.

  1. This is my first grow so I’m not to sure if it’s something to worry about. I’ll provide a pic bellow if any body could tell if and what the problem is
     

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  2. May be the beginning of calcium deficiency. What's your water like? Are you adding anything? How much and how often are you watering?
     
  3. I use deer park ph’ed to 6.5. I water every 2 days with a spray bottle just enough to moisten the top soil, and I added nothing but a tiny bit of mycorrhizae because she wasn’t sprouting.
     
  4. Bottled Water - The Definitive Bottled Water Site

    It has calcium and magnesium in it...
     
  5. Do you have any Cal-Mag? Since you're doing a foliar spray anyway, you can add it at 1/4 strength. Spray her a few times throughout the day enough to get the leaves damp.
     
  6. would tap water be better? I could get some cal mag, do you have a preferred brand.
     
  7. I use botanicare Cal-Mag plus but, there are others with less salts in them, more organic. Like FoxFarm Gringo Rasta Cal-Mag. Whichever you go with, just mix it at 1/4 strength.
     
  8. Thank you for all the advice. One more thing should I stick with deer park and add cal mag or switch to tap water
     
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  9. What do you know about your tap water? Is it high or low pH? Lots of sediment or maybe do you have a filtration device such as reverse osmosis.

    Do you have a pH and ec/ppm meter?
     
  10. I have very clean tap water and I do also have a ph test kit, and just to be clear when you pointed out deer park had calcium and magnesium did you mean it had to much or to little
     
  11. And when I use the cal mag would I spray just the soil or leafs and soil
     
  12. I was just pointing out that it was listed as being in it. Not sure if it would be enough or not but, a young plant doesn't yet have enough maturity to obtain everything through the roots. That foliar spraying with some cal mag should give her what she needs until the root system grows in more.
     

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