I'll keep that in mind about the 20 or 40 cu ft tank. I am very thin so maybe the 20 cu ft is better for me :)I was going to order the regulator you posted online. If I can't find it (or something similar) locally then I will, because right now I really need to rush it with the ozone.
We live in a small town and drove around saturday looking for welding supply stores and noticed there is a place that sells pure medical oxygen. I feel like asking if they can sell me some but I've known we need a prescription. I wonder if it will hurt to ask..just incase of a yes? The reason I say if it will hurt to ask is that I wouldn't like for them not to sell me anything afterwards. The main reason of using a pediatric regulator is to start off at lower levels, right?
I'm going in today. I get nervous kinda easy. Thankfully my dh is going in with me.