Hi thx for the message. This is the first forum I have ever signed up for. It is good to communicate with people that understand what I am doing, and trying to accomplish. I was really impressed with your posts and knowledge in the concentrate area. I have mastered making oil, budder and bubblehash,IMO,and now I am working on e cigs and good concentrates to put in them. I have isomerized once with the flower tower, sulphuric acid, and iso.It was a lot of work. But I do believe it worked in making the stone pysco,it was almost like I was high on extacy or something,everyone who tried it said it was really good, and could only smoke so much of it. But for fear of having petro either in it still, I cooked it off more on a coffee heater, and now it doesn't seem as potent?maybe the delta9 cooked off too, I don't know for sure....but I will try again. I am thinking there is better way of isomerizing,then the old school teks I am always reading,I will be in touch kindest regards