How you do it is really up to you.
I've found the best way to do it is bring the water right up just barely touching the cube. Actually the best way is if the water level is just below the cube, and the air bubbles actually wet the roots, not the water.

Of course its critical that the roots get moisture, and exactly how you do it ... the plant doesn't care. You don't want it drying out, but you don't want it drowning either.

SN
SpaceNeedle Reviewed by SpaceNeedle on . Transplanting clones to hydroton based bucket Am about to start cloning two of my daughters and wanted to know a few things before getting started. Will be using a three gallon bucket, with a top that has the net bucket built in, approximately 6" wide and 5" deep. Plan on having two air stones connecting to one pump with two lines. The clones will be rooted in "ReadyGro SuperPlugs". Once the clones have successfully rooted and are ready to be transplanted, Am transplanting them into hydroton, should I have the water level in the Rating: 5