Anjon Monsoon submersible pumps are high flow, energy efficient hybrid drive pumps. Engineered for 24-hour continuous use, each pump come with high quality seals for longer and efficient pump life. These pumps contain no oil, so they are fish safe. Monsoon pumps pass solids up to1/4" in diameter and feature an overload sensor that prevent pump burnout. They can be used vertically or horizontally.