actinic bulbs

Discussion in 'T5 Aquarium Lighting' started by zzzzzzzzpr, Dec 16, 2011.

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  1. zzzzzzzzpr

    zzzzzzzzpr Purple Spiny Lobster

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    Feb 24, 2011
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    whats the difference between regular and true actinic bulbs?
     
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  3. 2in10

    2in10 Super Moderator

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    True actinic make colors look better and make fluorescing colors really stand out. They do nothing or very little to help growth. Their PAR is about 2.5X less than standard bulbs. Low Kelvin bulbs are best for growth but do very little for color.