Specification Brand : EasyPro Pond Products BulletPoint : Easy Filter Cleaning BulletPoint1 : Maximum Flow Rate 75gpm/4500gph BulletPoint2 : Weir Opening 8" BulletPoint3 : Dimensions 20"L x 15"W x 19"H BulletPoint4 : EasyPro Pond Skimmer For External Pumps BulletPoint5 : Easy to clean with water BulletPoint6 : EXTENSIVE COMPATIBILITY: This bulb is designed to work with a variety of pond and fountain filters, including VIVOHOME various GPH pond filters with 13-watt light, delivering effective water purification; As a consumable, the UV radiation power of the bulb will naturally decrease over time, which is a normal phenomenon Please Replace Every 8 Months for Optimal Performance Color : Green ControlMethod : touch CustomerPackageType : Frustration-Free Packaging ExternallyAssignedProductIdentifier : 5060300640936 ExternallyAssignedProductIdentifier1 : 812506011721 ExternallyAssignedProductIdentifier2 : 0812506011721 ExternallyAssignedProductIdentifier3 : 00015561215299 GpsrSafetyAttestation : 1 ItemDisplayWeight : 40 pounds ItemName : EasyPro Pond Products PSMEX Pond Skimmer For External Pumps ItemPackageDimensions_Height : 53.594 centimeters ItemPackageDimensions_Length : 55.88 centimeters ItemPackageDimensions_Width : 43.688 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : pond-filtration-equipment Language : spanish Manufacturer : EasyPro Pond Products Material : Plastic ModelName : Black Knight Koi Pond Filter Brushes 24 Inch Long by 4 Inch Diameter Pack of 3 ModelNumber : PSMEX NumberOfBoxes : 25 NumberOfItems : 1 PartNumber : 1 PowerSourceType : No power ProductDescription : Filter brushes made from the very highest quality polypropylene twisted into two stainless steel wires to form a cylindrical brush with a loop at one end for hanging. The other end is capped with a plastic knob for safety. They last indefinitely and are the easiest to use, most efficient and most cost-effective pond filter medium you can buy. Black Knight brushes work in three ways. First, they physically trap the large particles that cannot pass through the close weave of the interlocking filaments. Secondly, the filaments have a static charge that ‘grabs’ any small particles that are flowing by. This charge holds onto the waste until you do your routine cleaning. Thirdly, after you have been using the brushes for a few weeks, the massive surface area of the brushes becomes home to millions of beneficial bacteria. Simply insert a vortex brush in the path of the flowing water and you will be amazed at how much waste is collected in a short time. If your second and subsequent chambers are already full of media then you can use either one vortex brush strategically placed around the transfer port or you can use several to build up a barrier of them above the inlet of the vortex and below the outlet (assuming that your vortex is designed in this way). This will allow the heavy waste to drop to the bottom of the chamber and then all the waste that does not settle is forced to pass through the brushes thus allowing it to be caught. You can coil one or two vortex brushes around the outlet so that the water must pass through the brushes. You can create a complete barrier filling the whole cross section of the chamber. With the more brushes you use, the greater the amount of waste that can be collected and the larger the surface area for filtration. ProductSiteLaunchDate : 2019-07-04T09:30:14.386Z Size : Pack of 1 Style : Above Ground SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 TargetAudienceKeyword : fish UnitCount : 3 UnspscCode : 40151500