Sweet. Thanks for the help guys, I hope to have a lot of fun and I hope you guys do too!

Well with a pump if I run out of compression I can just top it off without having to find a supplier to keep me going. Self sustaining I guess? lol.

But yeah, both wouldn't be so bad, heh.

So I think I've got it. That was a pretty nice explanation and it got me thinking about what's really happening with the air (how it wants to neutralize itself, it seems).

Just to be sure, though:

This means the co2 canister would have to have enough air to fill two 2 liters in it and even more in ...

So quick question on that, if you don't mind:

I'm guessing that more pressure but less volume would mean I'd have a stronger jet for less time and less pressure but more volume would mean a lower pressure but for a longer duration.

Specific to my use, I guess it's about finding the right balance ...

Thanks for the answer and the tips!

Thanks for the link. I've either got some learning to do or I'm just going to wing it.

I'm probably going to wing it, lol. I'm dealing with water over a long time, so I'm guessing I need a higher volume to keep the high pressure constant.

Thanks guys! You seemed to know your stuff, so I figured I ...

I got confused on the 'won't get the same power' part but that's just my own doing I guess. It makes sense overall.

Dah well, I was hoping for something like this (two 2 liters | looks weird a on mobile phone):
__________
__||__ __||__
| | | |
| | | | -more air
| Air ...

As analogous to series and parallel in circuitry:

Can two 2 liter bottles at 70 psi be treated as one bottle at 140 psi?

Thanks!