paintballe48 said:The higher color temperature you go the slower the corals will grow but it will increase your coloration in your coral, you could run 6500 bulbs and see a ton of growth with ugly brown dark colors, where as you can run 20k's and see awsome coloration but much much slower growth, Imo 14k's are my favorite for the blue tint they give to the tank and also its a good midpoint between growth and coloration. 12k's should be fine though and you will get a nice glowy blue effect out of it, alot of it comes down on personal opinion so go by what you like ;D
thanks for the advice, my concern is that the Reeflux 12k is sooooo much less brighter than the outer orbit 10k HQI bulbs