Too wet.
Either too much fertilizer or too low pH.

Please do not make AIDS jokes on this site, as HIV/AIDS is a medical condition whose symptoms are partially treatable with cannabis use, and we do have members who would not take the 'joke' so lightly.

Read the FAQs and stickies before you grow.
stinkyattic Reviewed by stinkyattic on . brown spot on seedling???? think my seedling has aids, or maybe you know? Rating: 5