I seriously suggest you backlight your tank so we can see the fish. Yesterday I tuned in and saw only a dark acquarium. Also, get some tropical fish with color. These fish looked like gray trout in a cave. Backlighting can do wonders.

You could also do us all a favor if you would broadcast the color bars late at night or early in the morning (so as not to interrupt programming) so we can keep out Home Theaters properly color calibrated.