And why do we all make that face in the sun, anyway? It's not like our angry eyebrows become a cloak that shields our eyes from the sun
if the fish are literally getting sucked in. Just get some mesh plastic thready stuff. Glue it over the fitting. But that wont stop the fish getting stuck because of the power of the sucking right? Try and put the tube which is sucking water against the wall so no fish can get close enough to touch it. Or like get a divider using the mesh you have leftover! And you can just keep the pipe completely away from your fishies.
I wouldn't use mylar - it will probably melt from the heat of the bulb. Try these ideas instead: Take one of the glass panes out, go to a hardware store, and ask them to cut pieces of mirror to that size. Then install them in place of the clear glass with the mirrored side facing the bulb. You may be able to turn the fixture at the top so that 2 pieces of mirror are enough to shield your neighbor's yard from the light. Another possibility would be to put a piece of polished brass sheet in the fixture on top of the glass to act as a reflector. The shinier the metal, the better. You may want to spray or brush on a thin coat of clear lacquer first, though. Otherwise, when the brass tarnishes, it won't reflect nearly as much light.
