Discover how to make an aquarium at home: 1. Choose your glass wisely: Choose the thickness of the glass depending on the size of the aquarium desired. If it's not thick enough it could crack, and at worse it would break. 2. Buy high-quality equipment to build: You will be needing: 100% silicone sealant, duct tape, a caulk gun, a few heavy containers for holding the glass. 3. Assemble the glass: With the help of caulk gun in hand and silicone glue glass along the sides. Then repeat along the inside edge of the front pane. If you are building a large aquarium, do not forget to affix double or even triple layered glasses together. 4. Setting up the insides: Test the seals by pouring in some water and if nothing leaks, you and your fishes are ready for the Waterworld. Do not forget to regularly clean your aquarium and take care of your fishes!