I think your soil has ferts in it that are too hot or your seedlings. What kind of soil are you using? If it is something with "timed release" ferts or does it say it has nutes already added?
Weedhound Reviewed by Weedhound on . 77-80 Degrees w/ 35% humidity. Possible heat problem? I have a few plants that are exhibiting some problems while others are doing just fine. These plants are only about 7 days old. My soil has no nutes and PH is around 7.0PH. I water this with water PH'd to 5.9 and the runoff comes out to be between 6.3 and 6.6. I only water twice a week, trying to get 3-4 days in between. I germinated these seedlings in paper towels and then placed them in rapid rooters before placing them in their semi permanent homes. Please take a look at my Rating: 5