I would drill also but if it's glass and you haven't drilled before I would say to go get a few cheap 10G from walmart and practice...... I read the DIY here on the forum and I busted all 5 sides of the first aquarium and 4 of the 5 sides on the second before I finally got a hole. I read it as I needed a super fast drill and go on high speed. When I successfully drilled the hole I would have said it was about a slow as I could convience my drill to go....... point is give it a practice go