I ran a site for a while and all u will need is a couple of 'dip' tanks and a fill station (available from paintball store). As for getting dip tanks, u want to get hold of a compressed gas supplier. They normally supply to hospitals etc. as well as paintball fields. So its an idea to ask your local field operator where he gets CO2 from. What u pay for is the hire of the cylinder as well as a fee for refills. And best of all, they deliver the cylinders to your door and refill them (for a charge obviously) whenever u ask them.
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