The UPETTOOLS Aquarium Gravel Cleaner is a versatile machine that can handle both freshwater and saltwater tanks. With its 6 in 1 functionality, it’s perfect for cleaning gravel, absorbing dirt, changing water, washing sand, and sucking fish poop out of an aquarium. The 110V/28W powerful water pump motor provides the maximum flow of 1700 liters per hour, and it only takes 0.5 hours to pump out a 180-gallon tank. At the same time, the pump flow is adjustable, so you can customize it to your needs.