Cold cathode moonlight with "parabolic" reflector

[Reefer Rob]

I think I'd like to go with 2 tubes with a lower output from each if posible for a more even ilumination of the tank at night. Each tube is rated at 3W which means a 250MA draw at 12V. I'm trying to size a transformer to run 2 of these. If I go with a 6V transformer does anyone know if it will still draw 250MA making it 1.5W, or will it draw 500MA each?

[kwirky]

they run optimal on 12v, but it's WAY too bright.

I ran mine off 4.5V, because 9v was too bright. I think if you're using two of these lights, try to run them 3 volts each. I used a reflector on mine, because I wanted the light to be shielded from the eyes, making it easier for the eyes to adjust to the dark. I still don't have it positioned over the tank well though.

most cell phone chargers are 5v. some are 4.5v