This tool is quite simple. What it does is helping you calculate the volume of several 3D prisms that are commonly used for an aquarium.
The shapes that are currently supported are:

• Rectangular
• Cube
• Bowfront
• Corner Pentagon
• Corner Prisim
• L-Shaped
• Flat Hexagon
• Hexagonal
• Octagonal
• Ragular Polygon Prisim
• Cylinder
• Half Cylinder