In a previous blog ( link ) I explained how I was securing the internal overflow to the base of the AGE tank. Well, even though it might have worked perfectly, my paranoia gene was flaring up and I kept thinking about how a leak from the base of the aquarium would require a full breakdown to correct the problem. Rather than just hoping for the best, I bought a tube of Aquarium-Safe silicone at Home Depot and applied it to the base of the box and reinstalled it. ...