refugium lighting?

tiger johnson

New member
if i were to light my fuge with a spiral pc bulb, whats the best color temp for macro algae growth? I can get them up to 6500K. as low as 2700K. sugestions are welcome. thanks in advance, Tiger
 
you can use either 6500 or 5700. I have tried both.
6500 is a bit more white and blue.
5700 is a bit more white and yellow.
They both grow algae great. I personally think 5700 grows more. But I never compared them side by side.
 
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