18 W. Straight PIN Linear Blue 7100 K -7200 K PC Bulb

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More of a blue type lamp awesome for coral growth

The 7100 - 7200k kelvin  is a straight pin meaning the  pins line up all in a row.

18W STRAIGHT PIN LINEAR BLUE 7100K -7200K PC bulb  Should be replaced in saltwater tanks ever 6 months to maintain good coral grown

BLUE 7100K 18W STRAIGHT PIN LINEAR