The Penn Plax Natures Aqua-Ponic Planter and Fish Habitat is a truly unique home decoration that allows you to grow live plants while keeping a fish, all in one place The innovative design replicates natures metabolic cycle for a fun and educational experience. Grow live plants together with your fishReplicates natures metabolic cycle for efficient growthEducational and fun for all ages0. 5 gallon Tank Dimensions 3"Wide x 8. 6" TallThe Aqua-Ponic Planter and Habitat replicates natures metabolic cycle, using each part of the habitat to support the others. The plants roots extend into the water and absorb nourishment from fish waste, resulting in purified water and a healthy environment for the fish. This is an ideal habitat for betta fish, as they naturally inhabit plant-heavy waters. Includes: 1/2 gallon fish habitat, planting bowl, and ceramic growing substrate.