This is a custom built tank for a customer in Cape Coral Florida who plans on keeping up to 10,000 different sized shrimp at one time. He is a bait and tackle shop and this tank will be connected to an existing sand filter system. A chiller unit will be added to manage the water temperature. This 400 gallon tank has 4100 gallon compartments, all shared water. Each compartment has the ability to pull water thru a 3" skimmer directly into the sand filter.