>I've got something I haven't seen discussed here yet. On the back of my >90 gallon tank I've got some algae growing that is a bright >red/orange. Best viewing is from the side at about a 45 angle. I've >seen this before. If my memory serves me correctly, the algae will be >green again in a day or two. I assure you the color is not reflected from >something else. Anyone have any ideas?