Versa-Top Hinged Glass Tops Keep fish and water in your aquarium where they belong. Our glass tops are perfect for reducing evaporation and keeping fish from jumping out of your aquarium. Each Versa-Top features a clear vinyl back strip that can be easily cut to custom fit your accessories. Reduces evaporation, Keeps fish from jumping out of aquarium., Vinyl back strip can be custom cut to fit your accessories Designed to protect light fixtures