06-04-2012, 08:18 PM
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Originally Posted by skelator
my tank is 36" and the bulb is only 24 inches. im using a phillips brand 6500k bulb/ it looks way better than the bulb I had in there before. that bulb didnt have any markings on it so i dont know what it actually was.
I would tend to stay with what you have for a while and see how the plants do...but what plant species are in your tank? This might make a difference.
My 36-inch tank has a 30-inch tube over it, which is a bit better, but with the newer T8 tubes that are more efficient the difference might be negligible. I have the 24-inch tube (same type, a Life-Glo 6700K) over my 30-inch tank. Both tanks have good plant growth, but I am not attempting light-requiring plants, they are low and moderate light species.