--- product_id: 1616111 title: "New Rola‑Chem Pool Sentry M‑3000 Automatic Pool Filler – Automatic Water Leveler for Inground & Above‑Ground Pools, Ponds & Spas – Auto Pool Filler with Adjustable Float Valve" brand: "rola-chem" price: "£136.62" currency: GBP in_stock: true reviews_count: 13 category: "Rola Chem" url: https://www.desertcart.co.uk/products/1616111-new-rola-chem-pool-sentry-m-3000-automatic-pool-filler store_origin: GB region: United Kingdom --- # Auto water level control Tool-free, quick setup Pump protection from dry run New Rola‑Chem Pool Sentry M‑3000 Automatic Pool Filler – Automatic Water Leveler for Inground & Above‑Ground Pools, Ponds & Spas – Auto Pool Filler with Adjustable Float Valve **Brand:** rola-chem **Price:** £136.62 **Availability:** ✅ In Stock ## Summary > 💦 Keep your pool flawless and worry-free—because your time is too valuable to babysit water levels! ## Quick Answers - **What is this?** New Rola‑Chem Pool Sentry M‑3000 Automatic Pool Filler – Automatic Water Leveler for Inground & Above‑Ground Pools, Ponds & Spas – Auto Pool Filler with Adjustable Float Valve by rola-chem - **How much does it cost?** £136.62 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/1616111-new-rola-chem-pool-sentry-m-3000-automatic-pool-filler) ## Best For - rola-chem enthusiasts ## Why This Product - Trusted rola-chem brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Pump Guardian:** Prevents costly pump damage by maintaining stable water levels and eliminating dry running risks. - • **Install in Minutes:** Snap-together frame and simple hose connection mean zero tools, zero hassle, and instant peace of mind. - • **Set It & Forget It:** Ideal for busy professionals—automatically manages water levels whether you're at work, traveling, or hosting. - • **Built to Last & Stay Put:** UV-resistant plastic with adjustable legs and weighted base ensures durability and stability all season long. - • **Effortless Water Balance:** Patented adjustable float valve keeps your pool, spa, or pond perfectly filled—no manual refills needed. ## Overview The Rola-Chem Pool Sentry M-3000 is a top-rated automatic pool filler designed for inground and above-ground pools, spas, and ponds. Featuring a patented adjustable float valve, it maintains ideal water levels to protect your pump from dry running and damage. With a durable UV-resistant design, weighted base for stability, and tool-free setup, it offers reliable, low-maintenance pool care that fits seamlessly into a busy lifestyle. ## Description desertcart.com : New Rola‑Chem Pool Sentry M‑3000 Automatic Pool Filler – Automatic Water Leveler for Inground & Above‑Ground Pools, Ponds & Spas – Auto Pool Filler with Adjustable Float Valve : Swimming Pool Maintenance Kits : Patio, Lawn & Garden Review: Excellent! - This is awesome! I have a leak in my pool that will cost $20,000 to fix. While I'm saving up to fix the leak, this has been wonderful!Now there's no guess work as to how much water needs to fill the pool and no more overfilling. Honestly, it works like the float in a toilet tank. When the water gets too low, it turns on. When the water hits the right level, it turns off. Review: Pool sentry works great! - I don’t usually right reviews but this product has been a blessing. Very easy to setup and works perfectly. I have a bad hip and knee and almost didn’t set up the pool this year. It has saved me a lot of time and pain not having to do the stairs to fill the pool water every few days. It keeps the level just right. Fantastic product thanks so much. I give the pool sentry 10 stars. ## Features - AUTOMATIC WATER LEVELING – The M-3000 Pool Sentry is the industry leading automatic pool filler - our patented design including our adjustable float valve mechanism maintains ideal water levels in pools, spas, and ponds so you don’t have to! - PROTECTS YOUR PUMP FROM DAMAGE – The Pool Sentry is the premier auto pool filler that keeps water levels stable to prevent dry running, one of the top causes of pump and filter failure. - AUTOMATIC PEACE OF MIND – Whether you're at work all day, traveling, renting out your home, or just want low-maintenance pool care, the Pool Sentry keeps water levels where they should be—automatically. Ideal for homeowners who value set-it-and-forget-it reliability. - FAST, TOOL-FREE SETUP – Just snap the frame together, screw in the float valve, and attach a high-pressure garden hose (we recommend B0F9526J8J). No complicated installation—get reliable performance in just a few minutes. - DURABLE & STABLE DESIGN – Made from UV-resistant plastic with adjustable legs and a weighted base (just add gravel or rocks), the M-3000 stays firmly in place on pool decks. Portable, reliable, and built to last all season. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003AXMD90 | | Best Sellers Rank | #14,340 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #23 in Pool Hoses | | Brand | Rola-Chem | | Brand Name | Rola-Chem | | Color | Black | | Customer Reviews | 4.2 out of 5 stars 2,680 Reviews | | Global Trade Identification Number | 00757706125109 | | Included Components | Includes: 1 x M-3000-1 Pool Sentry | | Item Type Name | Automatic Pool Water Leveler | | Manufacturer | Rola-Chem | | Manufacturer Part Number | M-3000-1 | | Material | Metal | | Material Type | Metal | | Model Number | M-3000-1 | | Number of Items | 1 | | Operation Mode | Automatic | | Style | Standard | | Style Name | Standard | | Unit Count | 1 Count | ## Product Details - **Brand:** Rola-Chem - **Color:** Black - **Material:** Metal - **Operation Mode:** Automatic - **Style:** Standard ## Images ![New Rola‑Chem Pool Sentry M‑3000 Automatic Pool Filler – Automatic Water Leveler for Inground & Above‑Ground Pools, Ponds & Spas – Auto Pool Filler with Adjustable Float Valve - Image 1](https://m.media-amazon.com/images/I/71gOiOSeDbL.jpg) ## Questions & Answers **Q: hwhat do you adjust to keep it from overfilling?** A: The float, which rises and falls with the level of the pool, has a long plastic stem which can be twisted, by hand, clockwise or counter CW to adjust the level. **Q: Will this work on an above ground pool?** A: Depends on the width of the lip of your above-ground pool. It isn't designed for above-grounds but, could potentially work with a wide space to set the weighted down base upon. **Q: I see that this is metal, can it be used in a salt water pool?** A: This is used on our salt water pool and has stood the test of time. Our neighbors purchased it for their salt water pool as well. **Q: Is there an extension collar?** A: No. Your hose is the extension on top and if you need it higher you can put it on top of a brick or mat. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent! *by B***S on October 9, 2026* This is awesome! I have a leak in my pool that will cost $20,000 to fix. While I'm saving up to fix the leak, this has been wonderful!Now there's no guess work as to how much water needs to fill the pool and no more overfilling. Honestly, it works like the float in a toilet tank. When the water gets too low, it turns on. When the water hits the right level, it turns off. ### ⭐⭐⭐⭐⭐ Pool sentry works great! *by C***E on August 23, 2026* I don’t usually right reviews but this product has been a blessing. Very easy to setup and works perfectly. I have a bad hip and knee and almost didn’t set up the pool this year. It has saved me a lot of time and pain not having to do the stairs to fill the pool water every few days. It keeps the level just right. Fantastic product thanks so much. I give the pool sentry 10 stars. ### ⭐⭐⭐⭐ Keeps the pool filled. *by B***5 on April 17, 2026* Very simple to use: fill with rocks to weigh it down, attach the hose, and adjust the water level. I knocked off one star because there's no way to clasp the two parts together, so inevitably someone will try to move it and spill rocks everywhere. A "lock" feature for the water level would also be useful so that someone doesn't accidentally change the water level setting. This happened to me once and I accidentally overfilled my pool. It's kind of in the middle of the way since you need to run a hose to it, so other people will end up moving it. That said, it does what it's supposed to do really well so your pool will stay full. ## Frequently Bought Together - Rola-chem M-3000-1 Pool Sentry - Biswing Garden Hose Splitter 2 Way, Heavy Duty Brass Connector Tap Splitter, Y Splitter 2 Valves with 2 Extra Rubber Washers - UNCO- Garden Hose, 10 Feet, Stainless Steel Hose, Metal Hose, Metal Garden Hose, Stainless Steel Garden Hose, Outdoor Hose, No Kink Garden Hose, Short Garden Hose, Garden Hose Metal --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/1616111-new-rola-chem-pool-sentry-m-3000-automatic-pool-filler](https://www.desertcart.co.uk/products/1616111-new-rola-chem-pool-sentry-m-3000-automatic-pool-filler) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-10-25*