correct iamthatguy. i have no rockwool in the plant to the left and pure hydroton. the pot is about 1/2 and inch to 1" submerged in water with 2 bubblers. the middle pot is being hand watered and the plant is in coco tek and hydroton, it has yet to be put in a system. the third (most right pic) is in a diy hydrosys with proper ph and nutes only it has coco tek and hydroton and a small wick to soak up nutes and water. the pot is about 1/2" to the water and not touching. only this plant is a seedling andseems to have a blackish burn on the 2 jaged leaves. i think the 24hr lighting is what did it. i hope it survives. on the plant to the left ( streched one) i have seen the bottom of the pot and i do see some slight new root growth but nothing very noticable and nothing really making its way out of the pot. what do you suggest.