pots are the way to go if you want to move your ladies around. i havent had a problem pulling 2 oz's a plant with 6x6x7 square pots. here is some pics one is how i do it in the hydroton.
Uncle Jimmy- done it yes it acts similiar to hydroton but its also much more harder to clean. It also fucks with your ph like hydroton. Seems know matter how much id clean them, Id still end up with all that dust in my table/rez. Also hear(don't know how true it is) that its tough on your roots due to all the sharp edges. It worked but its a PITA and I def. wouldn't reuse it due to the fact its each rock has hundreds of small holes that roots find/grow their way into and its impossible to get out. Just to much trouble. I'll be sticking with perlite.