Ok the deal is you put a fully refundable deposit unless the bottle has been misused the you lose deposit. Sounds fair right. The rental is only $10 per month per bottle and the refills are $50 each bottle. The turn around for bottle filling is in Summer it is every second day and in Winter it is everyday. As i mentioned above get four refills in a month and pay no rental at all. Fantastic savings. other size bottles on request at other charges. But these are discreet and easy to lug around.
Check us out for our Harvest Master controllers and GreenAir look in Testing or CO2 on the side menu.