Originally Posted by leogtr
its a 20w 6700k fluorescent bulb. Im going to experiment with a 20w 18000K bulb do you think thats a good idea Mikaila?? it says its suppose to be better than the life-glo. Have you ever heard of the aqua-glo?
The Life-Glo is the best single tube for a planted tank. It is triphosphor, which means high in blue, red and some green to balance for the closest colour rendition to sunlight.
The 18000K means more blue in the colour, but without knowing the spectrum breakdown I can't say if it is OK, but i would highly expect not. On my larger tanks i like a mix of Life-Glo and a "bluish" second tube, I've never seen one this high in Kelvin. Makes me think it might be too blue, something akin to actinic which are not good plant lights.
The Aqua-Glo is high in blue and red, nothing else, which should suit plants. But there are two drawbacks. First, it is half the intensity of the Life-Glo so that means much less light. And second is the purplish hue it gives the tank. Fish and plant colours are not natural.
I have an Aqua-Glo, tried it with a Life-Glo over a dual-tube tank, but no go.
And I agree with what others said about the bunched plants and light.