Anybody know where to get bulk scuba hose and fittings? Is there a serious difference between "real" scuba hose and fittings (48 bucks for seven feet) and the stuff you get at the hardware store (30 cents a foot plus fittings)? This would be strictly for air use, not EAN or high percentage O2 gas. What about the high pressure SPG hose? Any ideas? thanks, e.a.e.