How would you know what pump can do what actions? To obtain maximum flow, always use as large a diameter of hose as easy enough. Suddenly you are confronted with a dizzying array of pump and filter options! External and submersible Koi pond pumps offer distinct advantages and drawbacks. http://ban-may-bom-mini50482.webdesign96.com/15086412/how-to-shut-a-pool-for-the-growing-season