10k or 20k, that is the question.

[BigBert96]

Im looking at adding a Metal Halide system to my new 120 reeftank. Should I use the 20k or 10k? Ive seen the 10k corallife fixtures, but the water seems to be too purpley. I like the blue look u get from the 20k bulbs. Ive always loved the "under the sea look." This is acquired by using 20k bulbs right? And also, will I need actinics to accompany the 20k's? I found a coral life setup with 2 175 watt MH's, and 2 96 watt pc actinics. The halide bulbs are xm brand. Does the brand of bulbs really matter? Thanks in advance for any help you may have.

 

[AllenFord_SC]

Why not just split it down the middle and go with 14K lighting. Not to white, not to blue. Actinic lighting is always a plus but is not necessary, but I would still use it. Never can have enough light! Some say the brand matters with that "get what you pay for" saying. XM is a good brand with many happy reefers. I prefer Hamilton but that's just me.

 

[BigBert96]

Thanks for the advice. How much blue would a 20k produce? I am wanting my tank to look like its underwater, but still have the shimmering effect.

 

[AllenFord_SC]

Check out this article:

http://www.cnidarianreef.com/lamps.cfm

 

[AllenFord_SC]

Scroll down about half way and the pics in the first column are just MH and the pics to the right are with VHO suplementation.

 

[BigBert96]

Interesting. I think I do like the 14K better than the 20k. Unfortunately, the corallife only comes with the 10k or 20k.