Quote: (Originally Posted by
BarryNL)

What would be the best choice for a stage bottle with tech1 in mind (aluminium, obviously). I can't see any particular requirements on the GUE site for tech1 and even tech2 only requires bottles of 30cu.ft or greater. Is there any reason to get a bottle larger than 40cu.ft.? Are there any other requirements I need to know other than material?
It's a deco bottle rather then stage, to be precise

I guess that AL40 is usually used in US; in Europe AL 7 lit is common. However, you can use AL80 as well. Recently, I had the opportunity to dive AL 10 lit and it's also Ok.