Check it out:
http://zeovit.com/forums/showthread.php?t=11040
For tanks from 250 - 790 gal
2.000 L/H air – 4000 LI/H Water
Total hight : 55 cm. 45 Watt/h
MSRP $1659.99
Klaus has been working on these things for at least twelve beers. AT LEAST(!!!)
PM for further details.