Set up and stock your in-home saltwater aquatic display today with Nature's Ocean Nutri-Seawater Natural Live Ocean Aquarium Saltwater. It contains 100% natural living ocean seawater that’s naturally filtered to ensure it does not remove or modify what Mother Nature intended. Live, naturally-occurring planktonic bacteria provide instant water cycling with no need to wait days before adding fish. Nutri-Seawater replaces missing natural LIVE marine bacteria, trace elements and critical nutrients needed to maintain ideal tank water quality and reduces the need for additional saltwater treatment products.