Acrylic fish tank is very lightweight. Especially if you compare them to the glass tank, acrylic tank is very light. Of course, when you put a water tank will be very heavy, but the tanks will be more easy to transport. Acrylic cylinder is also very clear. The visibility of the fish better than glass. Another advantage is that the shape of acrylic tanks, you can find all kinds! Bow front aquarium is my favorite. They look better then regular rectangular tank.