My clones do that just about everytime and all I use is the Rockwool cubes to start them. If the roots are visible out of the cube then plant and go, if not then (if it was me) I would mix up 1/4 strength nutes and "dunk" the cubes into the water for about 3-5 seconds. Also if rooted get rid of the dome unless you want a mold problem. to much humidity when rooted can give that overwatered look, been there done that about 2 grows ago and almost lost half the clones b4 we figured it out.
tinytoon Reviewed by tinytoon on . clone trouble, need help! im am two weeks in with these guys. half of them i cloned into peat pellets and half into rockwool cubes. in the last week the ones in rockwool have been turning yellow on the lower leaves, yet the ones in the peat look just fine, i have been misting the dome morning and evening with just water as the dome is drying up, no nutes. just yesterday i thought maybe the clones in rockwool are not getting any nutes but the others and getting something out of the peat. so i did a weak foliage spray of Rating: 5