How Do You Build A Multilevel Aquarium?
Fish are healthier and more active when they have enough room to move around freely. Different varieties of fish tend to stay at different levels in the aquarium. Multiple levels will encourage fish to move around with more vigor. Cut the 2-by-4 into four pieces: two 6 feet long and two 2 feet long. Place the two shorter 2-by-4s between the two longer ones, on their 2-inch edges. Drill 1/8-inch pilot holes into the 2-by-4s, through the center line of the 2-foot 4-by-4, as shown in the diagram. Countersink the holes. Secure the frame with 3-inch galvanized wood screws. Cut the 4-by-4 into six pieces, each 2 feet long. Place the 4-by-4 posts inside the corners of the 2-by-4 frame. Drill two 1/2-inch diameter holes through the posts and through the frame, as shown in the diagram. Working from the outside edge of the frame, slide a fender washer onto the first carriage bolt. Slide the bolt through the frame, then through the post. Add a second fender washer, then a lock washer, and tighten
