Crystal-Clear Pool Floors in 10 Minutes Flat.
Stop replacing $150 cordless pool robots that short out and get stuck on floor folds.
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Every contour, valve, and bristle bundle on the Cosari HydroArc Pro is built to solve the exact frustrations of 12ft to 28ft round and oval pool owners.
Standard rectangular heads bang into curved walls and leave a ring of brown sand behind. Our curved kidney profile hugs the perimeter cove seam to evacuate side-wall sand in one smooth stroke.
Dial in the exact downward grip for 0.5 HP to 2.0 HP pumps. Venting excess suction lets the head pass right over vinyl floor wrinkles without clamping down.
Dense perimeter and underside black bristles gently agitate embedded silt and fine debris out of textured vinyl embossing straight into the central suction channel.
No hardware-store adapter runs. The vertical center port accepts 1.25" and 1.5" hoses, and the hinged white handle snaps into standard 1.25" spring-clip poles.
As you guide the head along the bottom perimeter of your pool, the curved kidney shell and dense black bottom bristles follow the exact radius of the wall—loosening settled sand and funneling it toward the center suction port.
Twist the two blue top air-relief valves beside the royal-blue circular pads to balance suction pressure. Even with a high-flow sand filter pump, the head glides smoothly over floor wrinkles without sticking.
Snap your existing 1.25" telescoping pole onto the hinged white handle and slide your 1.25" or 1.5" vacuum hose onto the central vertical port for continuous, battery-free suction that never dies mid-clean.
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Heavy-Duty Weighted Kidney Pool Vacuum Head with Dual Wrinkle-Safe Air-Relief Valves & 360° Bottom Nylon Bristles
Backed by our 30-Day Money-Back Trial & Full Cosari Guarantee.
$79.99 $159.99 Free Tracked Shipping (5–7 Days) Included
In Stock: Delivers in 5–7 Business Days. Free insured US delivery with tracking.
30-Day Money-Back Guarantee plus a full 2-Year Warranty.
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Why We Built It Without Batteries: Submerged electronics and chlorinated water do not mix. Instead of packing fragile circuit boards and lithium cells that leak and short out after 60 days, the Cosari HydroArc Pro uses pure hydro-mechanical ballast and your existing pool pump to deliver relentless suction season after season.
Liner-Safe Materials & Dimensions: Molded from UV-stabilized semi-gloss white polymer with a 14-inch (355mm) kidney span, dual royal-blue circular counterweight pads, two adjustable blue air-relief valves, non-marring black nylon bottom bristles, a hinged white 1.25" pole mount, and a stepped 1.25"/1.5" vertical hose port.
Shipping & 30-Day Guarantee: Orders ship within 24 hours with free tracked delivery. Try the HydroArc Pro in your own pool for 30 full days—if it doesn't stay planted flat and clean your side-wall sand faster than your old net or cordless vac, return it for a 100% refund.
Free 5–7 Day US Shipping: Every order ships free with full tracking and delivers in 5 to 7 business days.
30-Day Trial: Try it at home for 30 days risk-free. Need help? Email us anytime at support@buycosari.com.
2-Year Warranty: If anything goes wrong within 2 years, we replace it free of charge or refund your order in full.
No charging docks, no corroded pins, and no flooded motherboards. Hook it up on Saturday morning and get full pump suction immediately.
The weighted chassis and dual royal-blue circular top pads keep the bristles pressed evenly against the vinyl floor without floating when pushed.
Smooth rounded perimeter bumpers and adjustable suction relief valves ensure you never snag, stretch, or puncture a floor seam.
Cosari HydroArc ProStandard Competitors
| Feature | Cosari HydroArc Pro | Standard Competitors |
|---|---|---|
| Vinyl Floor Wrinkle Clearance | Glides smoothly via 2x Blue Air-Relief Valves | Gets stuck on wrinkles or suction-locks onto liner |
| Curved Round Wall Sand Ring | 14" Kidney Arc hugs wall seam in 1 pass | Misses curved edges or stirs fine silt into a cloud |
| Underwater Floor Stability | Dual Counterweight Pads stay planted flat | Floats upward off the floor when pushed forward |
| Multi-Season Reliability | Zero electronics — UV & chlorine proof for years | Water leaks onto motherboard within 1–2 seasons |
| Hose & Pole Compatibility | Universal 1.25" / 1.5" Port + 1.25" V-Clip | Requires extra cuffs or proprietary chargers |
Swipe left for steps 2 and 3
Pinch the spring V-clip on the hinged white handle to snap it onto your standard 1.25" telescoping pole, then push your 1.25" or 1.5" pool vacuum hose over the central vertical port.
Lower the HydroArc Pro straight to the pool floor—it sinks in 3 seconds and plants flat. If your pump has high suction over floor wrinkles, twist the two blue relief valves slightly open.
Guide the curved kidney head along the outer wall seam and across the center floor, watching settled sand and fine silt disappear into your skimmer in a single clean pass.
Great little vacuum for my 12ft round pool. Sand collects around the side wall, and the curved kidney shape gets right along it. The black bristles sweep it up without catching or pulling at the vinyl liner. Definitely worth the price.
I was using a heavy net before and could never reach the deep parts well. This clips onto my telescoping pole, and the hinged handle lets the head stay flat on the floor. Pool maintenance is so much easier now.
Small, compact, and plenty of suction for our medium-size pool. The central port fit our standard vacuum hose, and the handle connected directly to our spring-clip pole. No extra hose adapters were needed, so setup only took a couple minutes.
Our Coleman above-ground pool is five years old, and this has kept it cleaner than I expected. I connected the weighted kidney head to the skimmer hose, and it stays down while I guide it across the bottom.
This does a really good job with the small debris on our pool floor. The dense black bristles loosen fine silt instead of just pushing it around, and the suction pulls it straight into the central port.
Simple, useful tool that does what it claims. The weighted white-and-blue body stays planted underwater instead of floating up every time I change direction. It makes routine cleaning quick and straightforward.
After multiple battery robots quit charging and leaked water onto their electronics, I was done replacing them. This manual weighted head has no battery, motherboard, or charging cycle to fail. Hook up the hose and pole, and it works every time.
I wouldn't go cordless because battery life always seems to become an issue. This weighted brush head hooks directly to the pool vacuum hose, so I get continuous suction for the whole cleanup without it dying halfway through.
Bought this last month and it is working great. It picks up small debris well, especially when I add a skimmer sock or fine filter media in the pump basket. Even the light dust gets trapped instead of blowing back in.
I prefer pool tools I can keep using year after year, and this one feels durable. The semi-gloss white body is solid, the hinged pole mount moves smoothly, and both blue air-relief valves are easy to adjust during vacuuming.
$79.99 $159.99 Free Tracked Shipping (5–7 Days) Included
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Yes. Unlike concrete vacuum heads that use hard plastic wheels and sharp corners, the HydroArc Pro features a smooth rounded semi-gloss kidney bumper and soft black bottom nylon bristles designed specifically to protect 20-mil above-ground vinyl liners.
The top deck features two adjustable blue air-relief valves right beside the royal-blue circular pads. Twisting these valves vents excess upward suction so the head glides smoothly over floor wrinkles without locking down or pulling your liner.
Yes. The hinged white pole handle includes a universal V-clip that snaps into any standard 1.25-inch (31.75mm) telescoping pool pole, and the central vertical hose port fits both standard 1.25-inch (32mm) and 1.5-inch (38mm) pool vacuum hoses directly without extra adapters.
No. To keep the price at $79.99 without forcing you to pay for flimsy multi-piece poles you don't need, this package includes the heavy-duty weighted Cosari HydroArc Pro vacuum head unit with its factory-installed hinged pole handle and dual relief valves. It connects directly to your existing pole and hose.
No. The weighted chassis and dual royal-blue circular top counterweight pads are engineered to sink within 3 seconds and stay planted flat against the pool floor even during brisk forward strokes.
Because the HydroArc Pro channels all debris through your vacuum hose straight into your pool's skimmer and filter pump, you get continuous high-volume extraction. For microscopic silt or dead algae dust, simply line your skimmer basket with a standard skimmer sock or a handful of filter balls to trap 99% of fine particles before they reach your pump.