let the roots grow out, put a small fan to move air over them. Set the rock wool cube up on a rack of some sort to keep the rock wool off the bottom of the tray. This technique is caller air pruning. the root ball will keep growing up inside using it to capacity. Then plant it in dirt and you...
I cleaned everything up. washed and rinsed pretty well. but must have had some soap in the pump. I ran the ebb and flow a couple times. looked in the resivour and noticed i had bubbles building up. the plants look great and I plan to clean everything in the morning. will this soap "dawn" hurt...