Bulb positioning

[yesjenks]

Hey,

I'm getting ready to replace the 2 12,000k bulbs in my light. The bulbs are presently set up like this,

White
White
Blue
Blue

Does it matter if I do,

White
Blue
White
Blue?

I;m thinking this may spread the color out some more. Thoughts?

 

[jnelson]

I would do the white/blue/white/blue, but a lot would also depend on the way the ballasts/plugs are set up. If you have two separate plugs, I would say put both blues on the same plug and set up a "sunrise/sunset" cycle (off, blue, blue/white, blue, off).

 

[KathyC]

I would do the white/blue/white/blue, but a lot would also depend on the way the ballasts/plugs are set up. If you have two separate plugs, I would say put both blues on the same plug and set up a "sunrise/sunset" cycle (off, blue, blue/white, blue, off).

+1
Best done with the lighting run through a controller, or in the least using a timer on each cord.

Do you have 1 or 2 plugs on the fixture?

IIRC this is a 75G tank?
You might want to consider adding a retrofit kit with 2 more actinic bulbs (or 2 actinic LED strips) and using 4 'white' bulbs to be sure you can grow corals anywhere in the tank

 

[yesjenks]

Unfortunately they are on the same plug. I put them blue, white, blue, white.

Thanks Kathy, I will think about adding actinic led's and going all white in the fixture.