Yeah nice one this is the system I was talking about, this is what confused me in the first place as the wilma is a Hydro Piece of Kit but you can use it organically too, the guy who I spoke to the other day uses the same set-up with soil and with the right mix it runs fine no problem and as the instrutions on the booklet explain that to use with soil simply use the dippers (small drops) instead of the Flood drippers (large drops) so Ive no reason to doubt the man, although Ive heard of the problems you're talking about I think with the right maintence and products it works very well as an organic way of growing. What gets me is the res Tank and the E.C levels do you think you'd apply the same levels of nutrient in your res as you would with both Soil/Pellets/CoCo or even bother to moniter them at all. As I dont want my business known I dont want to go asking these kind of questions to people I dont want to know, any advice would be appreciated.