The geometric designs are offered in three different shapes: Rhombus, Heart, and Oval. Each with it's own unique form, is eye catching and compliments any empty wall or room with tropical furnishing. These geometric designs are much larger than the spherical design with approximate specifications of the following: Geometric Tanks (approx.): Size(LxWxH): 49.5 x 87.5 x 23cm (approximately 19.5"x34.5"x9") Fluorescent Light: 20 watt Water Volume: 25 liter/ 6.6 Gallons