Anjon 16 Inch ProFalls PF-16 Creates Waterfall, Combines Mechanical and Biological Filtration for Ponds and Pondless Water Features - Helps Clean and Clear Water &#9989; WATERFALL 16 INCHES WIDE: The Anjon 16 Inch ProFalls PF-16 provides the soothing sound of running water while adding aeration and water flow. It is 20 inches wide x 16 inches deep and 11 inches tall. Its weir is 16 inches. &#9989; FOR PONDS UP TO 3,000 GALLONS: Use this ProFalls in a pondless waterfall feature or in a pond or water garden up to 3,000 gallons. It works with a maximum pump flow of 2,400 gph. (Pump not included.) Its inlet accepts 1 inch and 1.5 inch ID tubing. &#9989; CLEANS AND CLEARS WATER: Besides creating a waterfall, ProFalls is a mechanical and biological pond filter. Its waterfall weir functions as an outlet for the filter. &#9989; INCLUDES FILTER MAT & BIO BALLS: The dense filter mat improves water clarity. With their high surface areas, the bio balls allow plenty of beneficial bacteria colonization for biological filtration. &#9989; INCLUDES HEAVY DUTY GRATE: The heavy duty garden shelf grate is perfect for supporting aquatic plants, herbs and even vegetables.