Quote Originally Posted by Dutch Pimp
....http://www.eyehortilux.com/tb/superb...2-78-62800.pdf
Cool! Thanks Dutch. That led me to this one on the Hortilux BLUE:

http://www.eyehortilux.com/tb/blue/E...2-78-57945.pdf

So they all run off ONLY 240v powered Ballasts? I'd seen people post this on the forums. Looks to me like they ALL say 240v+.

I'm not trying to steal this thread . I've been looking at 1000w switchable Ballasts and MANY run on either 110v or 220v. Looking at the charts on this site show Nominal voltage in the 240-260v range for all the 1000w bulbs. Does this mean I have no choice but to run 220v to my ballast?

As for the actual answer to this thread, looks like the only disadvantage to these bulbs is lifespan.