I have used both and to be honest, I dont see the difference(in performance, not color), I could be wrong. If your using the double bulb type(PC), try using the ones that have dual actinics(420/460). Best of both worlds. Luna _________ 9YR OLD 90G/55g custom sump/refug Mag18 Aquac 180skimmer 692w MH AC jr,yel&kole tang,midas&convict blenny,B&G chromies,Blk/yel fin chromie blackcap,nemo,neon goby,6line; Blastomussa Merleti,Acan ,BUBBLE,Torch,LTA, Acropora(2) Moon, assort zoas, yel& G star polyps, P&B ricordia, montiporas, cup&candy corals, xenias,B/G mush,flower ane(2), cherry red mussa, dusters,cleaning crew.. 
Last edited by lunatik_69; 04-24-2008 at 12:50 PM.
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