Anyone try these new 20k XM MH Bulbs? Need 20k bulb advice.

[SunnyX]

I was wondering if anyone has tried these bulbs- http://www.hellolights.com/250wxm20000k.html

They are 250watt XM 20k Metal Halide bulbs. I currently have 10k Usihos and I feel that they are too bright and are drowning out the colors of my corals.

-Is there any advantage to running 20k over 10k?

-Better color and more growth?

-If you guys dont like the bulbs listed above please suggest one.

 

[Dennis7]

It mostly comes down to personal preference for 10K and 20K, with 20K being more blue.
For best growth youo can't beat 6500k Iwaski's, they come in #1 on every test that I've seen on growth. But they are yellow.

 

[wooddood]

getting ready to switch to halides so im tagging along,thanks.

 

[Maxx]

check out the link in this thread....http://www.reefsanctuary.com/forums/showthread.php?s=&threadid=200
Very in depth look at almost all the 250 watt MH bulbs...
pretty lengthy reading, but well worth it.

 

[Witfull]

the difference is astetics, corals dont care what color the bulb is, its intensity. the 65K are brighter, and more intense at the same wattage. moving up in K factor you will also have to bump up wattage.