Yea sps a definate. And change 1 bulb a week so dont bleach anything. And the coral plus is a 14k daylight bulb and the purple is an 8k i believe. The actual kelvn rating isnt really important just that you have enough day bulbs to bring the color from smurfville to a more pleasant look. Also the day bulbs have the reds and greens and such to make those colors pop and come out in corals.
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