Curtain raiser on my new hood for the 5 2 2 euro-braced tank.
Top of the hood is in two parts - the flat rear portion is the heat extractor chamber and the sloping front portion merely a reflector redirection for the lights.
I have placed the lights looking forward and needing redirection to the tank. Yes, I would loose an extra 10% of the light at-least by this arrangement as I am using a glossy white laminate for the reflector. I needed to arrange the lights in this way for two reasons - 1 because I like the lights to be directed on the inmates of the tank from the front as that displays them better, and 2 because I am using an odd mix of MH 70Wcoloured bulbs; two of the bulbs are blue and two are red all four are the type used for colouring fountains, the fifth bulb is a normal 5200K shop light which has a lot of green and yellow for brightness but is weak in either ends of the visible spectrum. The light arrangement is needed to mix the different shades before they enter the tank water for more uniform viewing.