They may be small, but they are built to pump a lot of water , Dimensions 4., 38 x 2., 36 x 3., 35 in , 42 Watts, 7., 9' Max Head , 525 Gallons Per Hour OASE Fountain Pump 525 GPH - Aquarium Connection Added suction cups on the pump bottom provide stabilizat All of our fountain pumps have an adjustable flow control to fine-tune the flow rate and pumping height. These pumps perfectly fit into existing fountains and water features. OASE 45416 525 Gallon/Hr Fountain, Black ; Currently unavailable. We don't know when or if this item will be back in stock. ; Style. Fountain ; How customer... The Oase Fountain Pump 525 is compact in design and powerful in speed, built to optimize any water feature. 525 GPH flow rate Oase Fountain Pump 525 GPH - Best Prices on Everything for Ponds and