Well this actually started happening early on and since I balanced my ph correctly and used fox farm nutes half way through it hasn't spread at all. If it isn't spreading should I be worried?Looks Like A Cal/Mag Defincey.I Currently Have 2 G-13 P.E Auto's Going In A Waterfarm.And They Both Have This Defincey.Peace And Hair Grease
If Your Using R/O Water You Will Need To Add Cal/Mag