Some Lumatek owners report better results if you have one that can run/switch to 240 volt...instead of 120 volt.

Ushio bulbs seem to work better too, with Lumateks

http://boards.cannabis.com/indoor-li...-ballasts.html
Dutch Pimp Reviewed by Dutch Pimp on . Burn-in period for Hortilux MH? How long does it take to "burn-in" a Hortilux 1000w MH? I haven't seen anything about this before and now my plants are left in the dark...literally Rating: 5