Finding the correct bulb...?

[BrooksReef]

So current for my lighting I'm using

1 250w SE XM 15k MH
4 54w T5's (2 18,000k 2 Actinic)


As of now, the 15k isn't blue enough for me. It's way too white for my taste. What would be the ideal bulb for the correct amount of blue, and the best amount of growth that I can get with a more blue bulb?

I'm using an electronic ballast.



Thanks,
Brooks

 

[Toddrtrex]

You could go to the 20K XM, which will be bluer, and might have the same amount of PAR as the 15K. While I like XM bulbs (( use the 20Ks )) the 15K bulb should be avoided.

 

[BrooksReef]

Well will it be enough if I'm just using one? Along with the T5's

 

[Toddrtrex]

Is this for your 75? If so, I would suggest going with 2. If you would put it in the center, the brace will cause shadows, plus being darker in the corners.

 

[BrooksReef]

As of now only 1 is in budget... I've seen nice growth with the 15k in the past month, but not as much as I'd like. Would one do the job for now, though?