Fixer
Active member
Yes only the Master Kush. I started them under the HPS then switched to the Sinowell LEDs at around four weeks out. They were about two weeks out and beginning to ripen when I cranked up the heat. I'm guessing that it's a combination of heat and light intensity that's causing the foxtailing. I grew MK under the 640W FGI LEDs with the temp around 80F a few crops ago without any foxtailing. The new lights are 720W not 640W so I'll have to wait to try the MK in the other table under the FGI lights to determine what's causing the issue.