OK, I just did my first res change in the Piss with the new batch having gravity and snow storm in it. I put 1 teaspoon of each into my 5 gallon mix. I also got my co2 generator running again. I was waiting for a part from Hydro Innovations, but I realized that when I finished fixing it last week and tested and it didnt work, that the gas was out. It shouldnt have been, but hey, what can I do. Then to my suprise, I look on the front porch and my box from them was waiting. They were supposed to send me a simple gas tube with the orafice attached, but when I opened the box, it was an entirely new Minigen. So now I have 2 functioning minis, always nice to have a backup. So thank you Hydroinnovations. Even though I had problems with the unit initially, there cutomer service, tech support, and free minigen more than made up for the incovienience. And even though there isnt much info out about the minigen, It really is a great co2 gen for small gardens. I wouldnt be able to use any burner but theirs.