Eshopps' Prodigy M is a new addition that combines both creativity and innovation at it's core. It was created for the advanced aquarist with efficiency and beauty in mind. The Prodigy is the slimmest overflow ever created. It has a rear external box where the drain hose attaches. It comes with the drill bit and the template for drilling. Imagine your OVEFLOW INTAKE only protuding into your aquarium the width of a dime! The overflow grid is also reversable to adjust your waters' height. The Prodigy M handles a flow of 700gph.