Found something on Ebay which is called the "New Azoo Regulator" for only $56. It looks a bit odd because it only shows one guage. Can be seen at AES@aquatice.com. Does this look right? Ebay also has the standard Azoo with two pressure guages for about $60. Also, how long might a 5 lb cylinder last on a 29 gal tank? And would it be good to also get a 2.5 lb to fill in when the 5lb needs a refill? Thanks.
