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halides are way worth the money if ya want to keep stonies but for most soft ya be ok with pc !! but id buy the halides and add 2 pc o3 bulbs then ya sky the limit almost !! on ya 90 id go with 2x 250 watt bulbs !!!
I just bought the set up steve is talking about for my 45G tank. I got a 250 watt halide with two PC 03 actinics. Do halides beat the poop outta PC in worth and benefits? IMO.. "Oh yeah!"