Demonstration and commentary on how to drill a 85mm hole in a 1/2" glass aquarium. I used a air drill and a $30 diamond coated hole saw to drill through a glass aquarium in 9 minutes. This hole will facilitate a 2" schedule 80 bulkhead for a return.... Adding new equipment to your aquarium or modifying your existing set-up may require drilling holes into the glass Drilling a hole in a glass aquarium requires Jun 21 2007nbsp018332Ive got an old old aquarium that Drilling a glass Aquarium We are discussing Drilling a glass Aquarium on 3reef Drilling a hole in a glass bottle is a skill you need for many craft projects Sep 13 2011nbsp018332Demonstration and commentary on how to drill a 85mm hole in a 12 glass aquarium I Our aquariums are made using thick glass and special silicone meant to hold water If you Rimless Glass Aquariums with custom options - Ultra Clear starphire Glass Reef Ready with overflow black silicone There will be times when you are tiling that you will need to cut a hole through the tile to allow for