This full size 60 x 60 cm tank has custom shaped foam benches that form the perimeter to damp reflection. Glass bottom is 43 x 43 cm. Includes a 40 cm motor driven rippler bar, a hand rippler bar, vertical light support, 4 paraffin blocks, 20 x 28 cm extra glass plate, parabolic reflector, and a white plastic viewing screen. Requires 1.5V power source. 3524B comes with all of the above plus 2 adjustable hand strobes and a light source.