Bicycle808 said:Being that it's indoors, it could be overwatered, or it could just as easily be poor ventilation. Moisture that would normally evaporate quickly if left on the leaves longer, and edema is the result...
Add another fan, or run what you got already more? I ran into the same problem, even with fans, when i started seedlings indoors this year. It was gone shortly after i hardened my plants off