bulb help

[shiner]

deleted.....

 

[ceg4048]

Might be a worthwhile read: http://www.barrreport.com/general-plant-topics/4768-k-rating-bulbs-plants.html

Edit: My apologies, I only just realized this is a Marine question. The link given is for a freshwater thread. Please disregard....

Cheers,

 

[shiner]

I'm running a metal halide 150w at present that is an arcadia 14K bulb, its quite blue. Would running a different bulb give me an increase in growth or is it just what looks best to the eye?