Shrimple Sponge Tank Divider - 20 Gallon Long

20 Gallon Long Tank Divider Sponge tank dividers are the perfect way to keep more types of shrimp in an aquarium. Most hobbyists are limited on space, here is our solution. Tank dividers can be used to separate shrimp of the same species but with different color variations. The divider prevents interbreeding.  Item Specification: Foam Type: Black Reticulated Foam Pores per Inch (PPI): 35 Size: 12 x 11.5 x 2