POPOSOAP Pond Waterfall Spillway with Pond Filter Kit

The Verdict

The Short Version: If you’re building a small backyard pond and want to kill two birds with one stone—waterfall aesthetics and biological filtration—the POPOSOAP Pond Waterfall Spillway is a solid mid-range pick. But before you buy, measure your pump’s output and tubing diameter. This unit has specific requirements that might trip you up.

What’s Actually in the Box

The POPOSOAP arrives as a single molded spillway unit with a removable filter media tray. Inside the tray, you get a set of coarse filter pads and a bag of bio-media balls—the same kind of porous ceramic balls used in higher-end pond filters. The spillway itself measures roughly 12 inches wide at the lip, which gives you a decent waterfall spread for a pond in the 50- to 200-gallon range.

You’re not getting a pump with this kit. It’s strictly the spillway, filter media, and the necessary hose fittings. That’s worth noting because some competing kits at this price point include a small submersible pump. The POPOSOAP assumes you already have one—or you’re buying separately.

Build Quality and Real-World Performance

The unit is molded from thick ABS plastic. It feels sturdy enough to survive a few years of outdoor exposure, though I’d recommend positioning it so the front lip overhangs your pond edge by at least an inch. That prevents water from wicking back under the unit and eroding your liner’s edge.

Here’s where the design shines: the spillway has multiple small slots across the front lip rather than one central opening. This creates a wide, even sheet of water that looks natural and aerates the pond surface as it falls. That’s a genuine design win over cheaper spillways that shoot a single concentrated stream.

The biofilter does real work, too. The water flows through the coarse pad first—catching leaves and larger debris—then passes over the bio-media before spilling out. For a small koi or goldfish pond, this can handle your biological load if you’re not overstocking. Just be realistic: this is a supplemental filter, not a replacement for a dedicated pond filter with UV sterilization.

What Buyers Keep Praising

Across the 200 Amazon ratings, the consistent theme is satisfaction with the water flow. One reviewer noted, “The waterfall sound is perfect—not too loud, not a trickle. My pond finally looks like something from a landscaping magazine.” Another long-term owner mentioned that after six months, the filter media still holds up after regular rinsing, with no warping or cracking in the plastic.

The ease of cleaning is another recurring compliment. The filter tray slides out from the top without needing to disconnect the pump line. That’s a small thing, but it means you’ll actually clean it regularly instead of dreading the chore.

Where It Falls Short

Let’s be honest about the downsides. The inlet fitting is the biggest headache. Several buyers reported that the included connector doesn’t match standard 1/2-inch or 3/4-inch flexible tubing. You may need to buy a barbed adapter or use a hose clamp to get a watertight seal. Check your pump’s outlet size before ordering.

The second issue is cosmetic. The black plastic is a magnet for hard water deposits and algae staining. In direct sun, you’ll see white mineral streaks within a few weeks. It’s not a functional problem, but if you care about aesthetics, plan to wipe it down monthly or position it in partial shade.

Finally, the flow rate matters more than you’d think. This spillway performs best with a pump rated between 200 and 400 GPH. Too low, and the water just dribbles over the edge. Too high, and it splashes and overflows the sides. If your pump is above 500 GPH, you’ll need a flow control valve.

Who Should Buy This

The POPOSOAP is ideal for the DIY pond builder who wants a clean, integrated look without running separate filter and waterfall components. It’s also good for smaller wildlife ponds where you want gentle water movement and some filtration without a big external filter box.

Skip it if you have a large pond (over 300 gallons), want UV sterilization for green water control, or need a pump included in the package.

Frequently Asked Questions

Q: Can I use this with any pond pump? A: Yes, as long as your pump’s output is between 200 and 400 GPH and you can adapt the hose size. Most submersible pumps in that range use 1/2-inch or 3/4-inch outlets, but you may need an adapter.

Q: How often do I clean the filter? A: Rinse the coarse pad every two weeks during peak algae season. The bio-media balls only need a rinse every couple of months—don’t scrub them, or you’ll kill the beneficial bacteria.

Q: Will this work above ground or just in-ground ponds? A: It works for both, but for above-ground ponds, you’ll need to build a stable base. The unit is heavy when filled with water, so a level, solid support is essential.

The Verdict

Buy it if: You want a compact, dual-purpose waterfall and biofilter for a small pond, and you already own a suitable pump. The wide water sheet and easy-access filter tray make it a genuinely good value.

Skip it if: You need UV filtration, have a high-flow pump you can’t control, or want a plug-and-play kit with everything included.

Rating: 4.2/5 — A smart, space-saving design with one nagging connection issue that’s easy to fix but annoying to discover.

Where to Buy

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.