I looked through the guide but didn't find anything about red spots. I guess they're sort of copper colored. One leaf at the bottom got them real bad and has started to curl upwards, and a couple of other leaves are starting to get red at the tips too. It's doing really well regardless, but I'm still worried.
EDIT: I have a 400W MH light system about 2 feet above it, is that too close maybe?
EDIT: I have a 400W MH light system about 2 feet above it, is that too close maybe?