Awesome! Lets all keep an eye out for black plastic evetrough. 15w bulbs are next size smaller yet each still brighter then a 60W incondecent. A reflective liner would greatly increase your light out put (95% reflective) and keep the light from glowing through the hood, though costly ($10+/ft). Great Job. I'm off to HDepot tomorrow.
This is a great DIY thread. Do you have a switch to turn it on and off or do you just have it on a timer? Also did you pant the gutter?
Here is another version. I thought the bulbs were too far apart on the first model, and didnt like the shadow in the center of the tank..
I did this...