Aquarium drill template 35mm

I made this having a need for a drill template/guide to make a 35mm hole in my aquarium. My tank was already in use and I had to drill from the inside of the aquarium. This guide can connect a 6mm hose on top for water cooling and 8mm hose in the bottom to drain water and glass slugde. The top connection is a little tight so some heat can help to insert the hose. It worked perfect when I used it! :-)