Go and buy yourself these one's nlites
google it... should be nlites . co . uk
anyways u cant buy direct from them but they do give you a contact page with info's on your country supliiers..... Oh yeah dont foret to buy yourself an E40 LAMPHOLDER, Thats the fixture for the bulbs there....
The only reason i went with the 125 watt ones is because you dont need to buy that extra power supply machine for them
wich is pretty neat... Thank god, i brought myself loads of e40 Fixtures ^^
Hope this helps you ^^ And maybe you would like to try HPS ? If you have enough money do the HPS... ^^