Well, heat stress can cause that. What you need to do is remove that tin foil as a reflector. It is causing heat spots within your grow. If your gonna use a speaker box, you need to paint the inside white, or get some mylar. Also, put a fan in there so that you can get that plant to hold itself up as it gets older.
whatsthatsmell Reviewed by whatsthatsmell on . Plant With A Twist I'm growing in a 15" x 12" x 35" old school speaker box. 2 x 26watt 6500k cfls daylight 2 x 26watt 2500k cfls soft 1 fan for air circulation (32cmu) 2 x intake/outtake w/ carbon filters on bottom of box. Anyways... What do you think my situation is? I'm a virgin grower. My pH is fine. The strand is Sour Diesel. Buddy cloned it for me, about a week after transplant. Rating: 5