I think puffer is selling a 20 high already drilled. Cheap if I remember correctly
$20 with stand & plumbing. Works as an overflow.
There was also another tank for free with 3 holes drilled in the side. I think a 10 or 15 gallon. Wouldn't be hard to plug the 2 you don't need. Or just get the bit and drill really slow on your tank. Barely put pressure on the side of my 10 with my hand and shattered the whole piece
You're right sorry for getting off topicTHIS thread is about "Drilling a 10 Gallon Tank".