Difference bet 10K and 6700K PC bulb?

[cpandrewschmidt]

Hey all,
Time to replace my bulbs. I know I still want a 65w actnic but what should I do for the other? I current keep mainly lps but do have acros that are doing fine under my current lights. I am not sure what the Satelite came with. It's 65w x 2. Which would be better for sps, but still be ok for lps? I don't know what all this Calvin stuff is or if it even matters with PC lights. Thanks again!

Andrew

[thrlride]

Hello Andrew!

The kelvin rating equates to the color of the bulb. 6700k is quite yellowish whereas the 10k is whiteish/yellow. 14k is white with some blue and then 20k is very blue.

[cpandrewschmidt]

so would atcnics be considered around the 20k range since they are very blue? or are they a totally different thing? Also, does a lower K grow coral better?