Well unless you can drill a tank when it is full of water and fish and corals, I won't be drilling mine anytime soon.......I wish I had the foresight before I set it up. I thought I had done a lot of research......but I guess I didn't realize how much better it would be with a fuge/sump...live and learn. I just want a short term fix as I intend to upgrade to a 120 within the next year or so