I'm pretty sure even with a hydro setup you need the cubes. I don't think you can just put it in water and have roots grow. This is similar to when you give someone a rose cutting and they put it in a vase with water. That rose dies in like 2 weeks and no roots form. Of course roses are different from weeds lol.
Well Ive seen this done in an other thread by the enforcer so thats why tryied it.. so if you say it doesnt work than ill take your word for it
Thats what I thought too but people are coming up with new crazy shit all the time. call me old school i guess ha ha.