An Aerox system is cheaper than an EDS, maybe half the price. This is life support, as in LIFE, this epitomizes "pound foolish". If you really wanted to save the money on an O2 system, the much smarter choice is to stay at lower altitudes where you do not need it. This is not something to jury rig or kluge together on a budget with parts not designed for this use. Honestly!!!!

On Thursday, November 5, 2015 at 6:51:25 PM UTC-8, wrote:
Thanks for the advice, Mark. I'd love an EDS system. But here in the East we rarely go high enough to need oxygen, it seems that spending $1000 on a system is overkill for use once a year or so. Also, we have very few convenient places around here to refill, other than at "wave camp".