Bluest metal halide bulb

[darkangler]

I am setting up a shark aquarium and am installing 2 halide reflectors on it. I am looking for the bluest halide bulb in a 400 watt single ended. Any opinions?

 

[jreeceaspen]

20K Radium German.

 

[WallyV]

I personally think XM 20000K bulbs are the bluest 400w. IMO. I run radiums but my buddy has XM.
-Wally

 

[reefmaster3024]

xm 20 k are probably the bluest

 

[stugray]

XM 20K were TOO blue for me.
I run 15K now.

Stu

 

[jason12345]

id have to agree but some of thoses ebay bulbs are really blue

 

[reefmaster3024]

the pheonix 14k bulbs are also pretty blue without being overkill. also the ushios 20k are pretty blue to me but with kind of a purple tint to them if that makes any sense a pulse

 

[darkangler]

Thanks for the replies. I was thinking either xm or radium. Since it's gonna be a shark system, the more blue the better.

 

[phillipj2]

Xm are defintly more blue than radiums. Xm last a lot longer and you don't need a electric ballast.

 

[SAZAMA]

here is XM20k 250w. holy blue!!!!

 

[recife111]

It also depends in what ballast you run,