I have top down drip systems that water twice a day for 10 minutes each time. I am using cocoa husk medium, 600w lights, House and Garden nutrients, and everything has been going great. Until the last couple days... I noticed a lack of new growth, so I decided to transplant 1 plant to a new pot, and was shocked to see absolutely no root growth on some of my plants. If anyone can offer some help, I'd sincerely appreciate it. Thank you for your time.