Submersible flat box filter keeps pond clean and reduces pump and fountain clogging. Flat box filter includes a coarse and fine pad, along with tubing and fitting for pump connection. Includes 325 or 550 gph pump, flat box filter, fountain attachments, swivel adjuster for leveling fountain heads, and diverter assembly. Ideal for ponds 250 to 500 gallons. 3 fountain attachments: frothy, spray, and bell.