Metal Halide

[newone]

I am geting a coralvue 250w metal halide retro kit. For my new 46 gl bow tank.

Should I get a 10,000K, 14,000K, or 20,000K. Or a XM 250W lamp 10,000K or 20,000K? :thinking:

 

[viper_930]

I believe XM bulbs do have a higher PAR rating, so that would be a better choice. If you're running it without actinics, go for the 20,000k bulb.