HQI is simply another aquarium legend noting more
HQI is a osram trade mark for there Powerstar metal halide bulb line from 70 to 3000 watt mogul base and double ended all included. For exemple calling a hushio double ended bulb a HQI is like calling a Yamaha snowmobil a skidoo
here is a link to the only real HQI bulb in this world
http://www.osram.com/pdf/service_corner/hqi_e.pdf
a bit of story
http://www.sylvania.com/press/09142000.html
here is the catalog of all HQI bulb
http://www.osram.no/brosjyrer/english/K01KAP5_en.pdf
Andy is not realy rong calling his ballast (Sodium son agro 430) a HQI ballast because it is the right ballast to run the REAL HQI bulb
see this link http://www.lamptech.co.uk/Spec%20She...20HQIBT400.htm
But if you go in europe HQI is the way to call ALL metal halide
no mater it is a mogul or a double ended so any metal halide is a HQI anyway
