bubbleponic reservoir contents???

i have 4 clones in my bubbleponic cloner, they have started to produce little white nubs. the only thing in the reservoir right now is RO water. should i add anything like vitamin b-1 or h202 or something? if so, how much per gallon? thanks
http://www.youtube.com/watch?v=[youtube]6lvUj929AAU[/youtube]

I would just stick with the water, when you move them into veg you can start adding things to the water...slowly. Just what works for me, good luck.

just water will do it.