I started building a "canopy" with no lid. I'm trying to figure out how to make the entire front of the canopy removable. As it is, the halide bulb will be 10" above the water level, it looks pretty good right now, just have to add more blocks to make it stable.

Any ideas on how I can make the front removable?

I'm bouncing Ideas around and right now I'm thinking some kind of magnet or maybe like four L brackets to make it slide into place.