The oase pondovac 4 is a powerful vacuum with three functions the new and even more powerful oase pondovac 4 replaces the pondovac 3 and even exceeds its predecessor in terms of power by as much as 20 it offers sufficient power and the required accessories in order to free garden ponds and pools and swim ponds as well of all debrisif you also include its function as wet vacuum in the household the pondovac 4 proves to be an extremely versatile multi functional vacuum and it also shows