The colors turn

I have been taking photographs of the tank for the past couple days. Once when I wake up. Once when I get home from work, and once when I go to bed. I used the same settings. Iso, white balance, shutter speed, aperture, focal point, everything. It is interesting to see the changes in water quality and in the rock as it adjusts.

This morning the rock looked much the same as it did yesterday, and the day before. However when i got home from work today it looked very different. The color was a lot more saturated. The purple coraline algae is a bit more purple. A little less subdued anyway. But the bare rock itself has taken on a golden yellow sort of look. Pretty neat.