refugium light, 65 watt pc?

[BigJim]

I recently added a refugium to my sump and am growing chaeto. For the light I have been using a coralife 65 watt dual 10,000k/actinic pc light that I had sitting around. I need to get a new bulb. What would be the best bulb for growing chaeto? Get a new 50/50 bulb, switch to a 6700k bulb, or a 10,000k bulb?

Is this too much light?

 

[Fish_wiz2]

i think it is just right but shoot for 6,7K to stimulate the sun which it is accustomed to in the wild

 

[horsefarm5]

My chaeto grows very well under 6700k

 

[BigJim]

:rollface: Thanks. I'll go with that.