when new with fixture came 2x 54w sea world actinic bulbs. one went bad, went to petco to replace and they had 1 to chose from. zoomed..awesome selection. but heres where the question arises: color is totally differant than the other original bulb. im thinking that thisis due to the 420nm. i dont know what the old 1 is but 420nm is the new zoomed. seen lights online with 460nm, which do i want/need, or is 1 of each better. might need to add they are HO t-5
Last edited by tonysearsjr; 05-04-2012 at 10:51 PM.
Reason: forgetfulness
actinic bulb compare
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