lighting mh 10,000k 20,000k whats better

[mastif36]

Hi
I have a 75 gallon tank, with SP's and LP's, M.H. 2 175 watt 10,000 K, with 2 60 watt PC. My question is: what's better 10,000 K or 20,000 K?
Need to buy new M.H. bulbs just wondering which one is better.
Thanks!

[Julio]

10K will giv eyou better growth and some good color, 20k will give more blueish colors on yoru corals overtime but might be too dim and not as intense in 175 watt bulbs. The XM bulbs give you high PAR values and great color one of the best on the market.

[Legal Reefer]

http://www.reeflightinginfo.arvixe.com/index.htm

[mastif36]

Thank you very much I WELL STAY WITH THE 10K