Best 250w Metal Halide bulb for coloration

xenon

Owner of Canada Corals
I don't care as much about growth as I do about coloration.

What would you guys say is the best 250w MH bulb/ballast combo to achieve the best SPS coloration.

This will be mounted into a Giesemann Spectra 24" (1x250w + 4x24w T5) over a 45g cube (24x24x18).

Thanks!
 
DE bulb?

For SE I think most will say radium 20k in a true HQI ballast or one of those select a watt.
 
Go for a cheap SE plusrite 250 20K. PM me if you want a couple $10each plus shipping. I switched to 400's a long time ago and have a few brand new ones left.
 
I still like the traditional 10K+actinic supplement and for my experiences XM+Giesemann works the best. I'll ditch the T5 and gift it to my counsin. I guess T5 is best for coloration but I hate the feeling
 
Strictly for coloration I'd use a 20k Radium on electronic standard 250 setting (non-hqi) or a 20k XM on electronic standard 250 setting.
 
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