EcoSphere Closed Aquatic Ecosystem, Sphere

EcoSphere Closed Aquatic Ecosystem, Sphere. 

The EcoSphere is a totally closed, adjusted, glass biological system. Inside each EcoSphere are shrimp, green growth, and microorganisms in salt water. Since the EcoSphere contains all that it needs to flourish, you never need to nourish the life inside, or change the water. All that is required is an agreeable room temperature (in the vicinity of 65 and 80 F) and a wellspring of light.