Are there any cons to using a standard shop light over my 40 breeder tank. It is 48 inches long with two fluorescent tubes. I am using plastic egg crate for the top, with maybe a thin piece of plexiglass on top of the egg crate over most of the top. If that works, would you use any specific bulb? How high above the tank would you hang it. The tank is not out for public view. I need the light for practical use...in other words it does not need to be pretty.