400 Flow @ 30ft (GPH):     24

Every 3 weeks Small pond / watergarden MZ8 8 oz

And with its superior design and quality components

Weir Size: 8

EasyPro Pro-Series 18,000 Gallon Large Skimmer w/o Filter Pad pondless waterfall kit small 400 Flow @ 30ft (GPH):EasyPro Pro Series 18,000 Gallon Large Skimmer w o Filter Pad The PS2 Pro Series Large Skimmer without Filter is one of the biggest skimmers on the market. Its inventive design gives you the option to use a vertical filter mat or filter brushes for superior filtration. Get top notch aquarium care with this state of the art skimmer. FEATURES Innovative design allows you to choose between a vertical filter mat or filter brushes Removable center divider,