The window is 6' wide and about 4' high. The bottom of the window is 4' off the floor. I change the windows out to thermal pane with "Low-E" glass, no tinting.
The light seems to come in from the top of the tank more so than the back that faces the glass, I get more algea on the front than the back. The tank has been running since Thankgiving, and full of fish.
The shimmer effect really looks good for a few hours each day the sun is out. The light reflexs off the front glass and on to the rocks I'am hoping this will be enought light to get some new growth on the face of the rock.
I'll know in June or July if it works OK.