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Discussion Starter · #1 ·
A buddy of mine gave me 2 25 watt PC bulbs. I have an Incandescent hood laying around I could put them in. I question the bulb because they are only 2700K. Lumens are 1250. What would be the effect of putting these on a 20 gallon planted tank? Is the 2700K inviting algae growth?
 

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I do not think you will see the kind of growht you are looking for. It will be a very yellow weird looking tank if you use these lights. I do not think it will invite algae for any other reason than poor plant growth.
 

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Discussion Starter · #3 ·
So is 50 watts at 2700K better or worse than 20 watts at 6500K?
 

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I dont know. Sorry i cannot have an answer. If i was in that perdicament i would use the 50 watts. The kelvin doesn't mean much. It is just a overall assumption on the lights color. Incandescent bulbs will never be as good for plants as flourescent bulbs. Because flourescents can be changed to better suit plant needs.
 

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I've read in other threads of someone having ok growing results using these warm white bulbs. But I wouldn't enjoy looking at a tank under those lights...way to orange to look good.
 
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