New Lighting

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Devon6209

Aquarium Advice Activist
Joined
Dec 17, 2011
Messages
183
Hey guys. I'm upgrading my lighting soon and am putting in fixtures that house T12 bulbs for a 60g planted tank. What bulb would be better of the two pictured? The 2nd bulb was labeled as plant bulbs but has no specifications on its K value and it's cri is 90.
 

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As an extremely broad strokes rule of thumb, "Plant Bulbs" are usually 4000-6000K, "Daylight" bulbs are usually 6000K-8000K, and "crisp white" are usually 10000K. Really, the bulb manufacturers can call it w/e the heck they want.

As long as it's in the right range (5000-10000K) and full spectrum, then color rating doesn't really matter. Either get something that is aesthetically appealing to you, or attracts you for some other reason. The plants should be fine.
 
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