SUNSUN CUP-359 combines everything required to to run a healthy algae-free small-sized pond. Designed as a single smart unit with a single power cable it allows for a much easier installation compared to a standard small-pond set up. Our CUP-129 / CUP-359 Pond System has a built-in 9w UVC Lamp and a built-in filtration system eliminating the need to purchase an external filtration system, which can be difficult to integrate around the landscaping of a small pond. This system is also supplied with a high-quality fountain attachment set comprising of four different fountain attachments, ideal for a variety of displays in your pond. The set also includes a splitter, enabling you to divert water to a waterfall, for example, and both the splitter and fountain are flow-rate adjustable. This gives you total control over the strength of your fountain and the volume of water diverted from the unit.