Create an environment in which shrimp is easy to incubation, breeding, is a retreat for the shrimp.
I combine bamboo charcoal high filtering effect. Unglazed pottery porous encourage the growth of bacteria, I will snap and purification Mizuno dirt.
Since there are three sizes, you can use it according to the aquarium size.
In addition, the combination of more than one is possible.
● Size is 13cm x 7cm x 7cm