To all my friends at AC Aquatic Plants

What is the "K" (Kelvin rating) on your lights..
At this time I'm using 8800K lights and they are very 'white' in color, not yellowish. Anything lower than around 6500K starts looking yellow. Some really like that look...

I didn't see you mention driftwood, so that's not causing the yellow due to tannic acid.

I think the main issue is how your digital camera translates the color. In order to take good pictures you may need to temporarily change your light bulbs while you take the pictures, not sure on what would be the right temp to use but I used 6500k and had greenish pics like yours. Maybe 10000k is good, I'm not sure. But I am sure that is your problem, cause you never get any strange color when you use a flash right? That's because the camera knows how to translate the color for the spectrum of light that the flash puts out.