Rbredding;616743 wrote: I was curious.. I was searching 250w bulbs and that popped up.. I didn't (and don't) know anything about them good or bad..
I would think that as you increase the number of arcs within a bulb, you decrease the output from the arc. (so this would have two 125W arcs in a 250W bulb... right?!?)
?really??LilRobb;616747 wrote: Nopes,
they don't burn simultaneously - it's either/or, so both have the full 250W
The Twin ARC bulbs have two separate color temperatures. By cycling the lamp (turning it ON/OFF) you can select the color temperature desired allowing you to set your light cycles to specific needs
haninja;616792 wrote: So what's the point of having twin 14k like this one http://cgi.ebay.com/400W-400-watt-14K-14K-Twin-Arc-Metal-Halide-Reef-Bulb-/290466192258?pt=LH_DefaultDomain_0&hash=item43a1225b82">http://cgi.ebay.com/400W-400-watt-14K-14K-Twin-Arc-Metal-Halide-Reef-Bulb-/290466192258?pt=LH_DefaultDomain_0&hash=item43a1225b82</a>[/QUOTE]
Only reason I could see would be that they should last twice as long as a single arc 14K.
That ad also says that they have a life expectancy of 20,000 hours. I wonder how long until the color gets bad? That is 6.8 years at 8 hours a day.
30 hours...Acroholic;616837 wrote: I wonder how long until the color gets bad?