--- product_id: 541255634 title: "Aquarium ATO System, QST2.0 Auto Top Off Controller for Tanks" brand: "fzone" price: "VT25895" currency: VUV in_stock: true category: "Fzone" url: https://www.desertcart.vu/products/541255634-aquarium-ato-system-qst2-0-auto-top-off-controller-tanks store_origin: VU region: Vanuatu --- # 74 GPH micro pump flow 0.79 in optical sensor diameter 3x overfill safety cutoff Aquarium ATO System, QST2.0 Auto Top Off Controller for Tanks **Brand:** fzone **Price:** VT25895 **Availability:** ✅ In Stock ## Summary > 🌊 Never worry about your tank again — the FZONE ATO keeps your aquatic world perfectly balanced! ## Quick Answers - **What is this?** Aquarium ATO System, QST2.0 Auto Top Off Controller for Tanks by fzone - **How much does it cost?** VT25895 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/541255634-aquarium-ato-system-qst2-0-auto-top-off-controller-tanks) ## Best For - fzone enthusiasts ## Why This Product - Trusted fzone brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Installation:** Complete kit with magnets, check valve, and 6-ft tubing for hassle-free setup. - • **Smart Overfill Protection:** QST 2.0 tech halts pump & alarms after 3 refill cycles to prevent flooding disasters. - • **Compact & Versatile Design:** Tiny 0.79-inch sensor fits rimmed, rimless, and sump tanks with ease. - • **Precision Water Level Control:** Dual optical sensors maintain water level within 0.6 cm for flawless tank balance. - • **Whisper-Quiet Pump Performance:** 74 GPH flow with 2-meter lift height keeps your aquarium topped off silently. ## Overview The FZONE Aquarium ATO System QST2.0 is a cutting-edge auto top-off controller designed for both saltwater and freshwater tanks. Featuring dual optical sensors for precise water level monitoring, a quiet 74 GPH micro pump, and advanced overfill protection technology, it ensures safe, reliable, and maintenance-free aquarium water management. Compact and easy to install, it comes with all necessary accessories and backed by a 2-year warranty and 24/7 support, making it the ultimate upgrade for serious aquarists. ## Description desertcart.com : FZONE Aquarium ATO System, QST2.0 Auto Top Off Controller for Tanks | Smart ATO system with precise controller for saltwater and freshwater aquariums, maintaining stable water levels : Pet Supplies ## Features - Upgraded 2.0 ATO System：The 2.0 ATO system ensures efficient daily water level maintenance for saltwater and freshwater tanks, making it ideal for use during trips or holidays. The upgraded interface allows you to easily start, pause, or resume the system with the FZ button - Compact and Versatile Design：The optical sensor measures just 0.79 inches in diameter, making it suitable for rimmed, rimless, or sump tanks. Dual sensors, spaced 0.1 cm apart, monitor water levels with precision, maintaining a difference of only 0.6 cm. Recommended for tanks with wave fluctuations under 1 cm. - Enhanced Safety Features：QST 2.0 technology provides real-time overfill protection. The system stops the pump and triggers an alarm if refilling exceeds 3 times the preset limit. It also detects sensor issues and low reservoir levels for added safety. - Quiet Micro Pump：The compact pump fits tanks with neck sizes over 1.97 inches, offering a flow rate of 74 gallons per hour and a lift height of up to 2 meters. Optimized operation reduces unnecessary activations, extending pump life. - Complete Accessories Included：The set includes strong magnets (compatible with tank walls up to 0.78 inches thick), a check valve to prevent backflow, and a 6-foot (180 cm) tube for quick installation. - 2-Year Warranty & 24/7 Customer Support:FZONE provides a comprehensive 2-year warranty along with 24/7 online customer support. If you have any questions or encounter any issues with your product, our team is always available to assist you—anytime, anywhere. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C68N3WK9 | | Best Sellers Rank | #27,992 in Pet Supplies ( See Top 100 in Pet Supplies ) #53 in Aquarium Water Pumps | | Brand Name | FZONE | | Color | Blue2 | | Customer Reviews | 4.0 4.0 out of 5 stars (459) | | Flow Rate | 1.23 gpm | | Included Components | prevent backflow | | Item Dimensions L x W x H | 0.2"L x 0.1"W x 0.1"H | | Item Highlight | Smart ATO system with precise controller for saltwater and freshwater aquariums, maintaining stable water levels | | Item Weight | 0.4 kg | | Manufacturer | FZONE | | Manufacturer Part Number | ATO-580P | | Manufacturer Warranty Description | Manufacturer warranty for one year from date of purchase | | Material Type | Polypropylene (PP) | | Maximum Lifting Height | 2 meters | | Model Number | FZ-580P | | Number of Items | 1 | | Power Source | Corded Electric | | Product Style | Auto | | Specific Uses For Product | Aquarium | | Unit Count | 1 Count | | Voltage | 15 volts | ## Product Details - **Brand:** FZONE - **Color:** Blue2 - **Item Weight:** 0.4 kg - **Material:** Polypropylene (PP) - **Maximum Flow Rate:** 1.23 gpm - **Maximum Lifting Height:** 2 meters - **Power Source:** Corded Electric - **Product Dimensions:** 0.2"L x 0.1"W x 0.1"H - **Style:** Auto - **Voltage:** 15 volts ## Images ![Aquarium ATO System, QST2.0 Auto Top Off Controller for Tanks - Image 1](https://m.media-amazon.com/images/I/51LdVhZJ0ML.jpg) ![Aquarium ATO System, QST2.0 Auto Top Off Controller for Tanks - Image 2](https://m.media-amazon.com/images/I/4116cs3JY-L.jpg) ![Aquarium ATO System, QST2.0 Auto Top Off Controller for Tanks - Image 3](https://m.media-amazon.com/images/I/41zQhTDbo8L.jpg) ![Aquarium ATO System, QST2.0 Auto Top Off Controller for Tanks - Image 4](https://m.media-amazon.com/images/I/41YF7FVCSVL.jpg) ![Aquarium ATO System, QST2.0 Auto Top Off Controller for Tanks - Image 5](https://m.media-amazon.com/images/I/51-31OpnhBL.jpg) ## Frequently Bought Together - FZONE ATO with Controller, QST2.0 Auto Top Off System for Saltwater Aquarium & Freshwater Aquarium - PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic --- ## 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.vu/products/541255634-aquarium-ato-system-qst2-0-auto-top-off-controller-tanks](https://www.desertcart.vu/products/541255634-aquarium-ato-system-qst2-0-auto-top-off-controller-tanks) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-10-25*