Hi I've been looking for somewhere to buy a dwc bubbler for some times as I been planing to make the switch from soil to hydro. I've decided to try a dwc bubble system but unfortunately I'm really in no position to build my own pots. the problem I've run into is that is nearly impossible to find a bubble one pot system here in northern europe. I could of course order from overseas but the voltage (220v here) would be quite a hassle since transformers are expensive. This is where i need your help - Do any of know where i can get such a system that fits my wiring ( don't mind replacing a few plugs as long as voltage is the same) ? - can some who has used oxy pots tell me about their measurements? I would like to know how many i can fit into my tents. And what kind of experience have you had with them http://www.growell.co.uk/growing-systems/hydroponics-growing-systems/the-iws-oxy-pot.html Any recommendations appreciated.