http://boards.cannabis.com/basic-gro...ush-mom-4.html
Posts 86-89 I think. This is what I used to model my bubbler. Few things I think I did wrong:
1. Didn't shave the bottom of the cutting well enough (cabbage is evidence of that)
2. Left the cutting too long for the bubbler (the bottom of the cutting was actually sitting in the water instead of above the water line)
3. Didn't keep the whole setup warm enough to promote faster root growth