you can use a macro line with co2 right? I want to put macro line on my phantom, but just making sure
Can you? Yes. Should you? IMO, not unless it's high pressure tubing with proper fittings. You'll probably get away with the regular stuff, but it's possible to go well over the operating pressure of the tubing or fittings on a hot day, especially with a pump. I have some compression fittings/better than average tubing that I don't need if you want them.