The plants are looking really good! I raised the light up to 20” today because they were getting too close. I backed off the Epsom Salt this week and started doing a feed, feed, water schedule. Two of the plants have reached the scrog, but the Slurricane and Grandaddy Purple are still about 3 inches away. I will wait for them to get a little taller then I will flip to 12/12.
Good luck. Got my own GDP going. Not a fem. An auto but still my 1st GDP so looking forward to trying.
Enjoy the short time left of your grow got some killer colas.
Good Growing