I will be using
the green silicone tubing, as I have heard standard air tubing gets brittle
and lets gas escape. Is it worth buying som other kind of tubing?

After a little research I decided to use polethylene tubing. You can get it
dirt cheap at Home Depot. I found it has about the least amount of loss you can
get.

I may
be love's bitch, but at least I'm man enough to admit it.'
Spike

Buffy Rules!