--- product_id: 564536018 title: "FZONE Aquarium ATO System, QST2.0 Auto Top Off Controller for Tanks" brand: "fzone" price: "$184.30" currency: USD in_stock: true category: "Fzone" url: https://www.desertcart.us/products/564536018-fzone-aquarium-ato-system-qst2-0-auto-top-off-controller store_origin: US region: United States of America --- # 74 GPH pump flow rate Dual optical sensors with 1mm precision Real-time visual & audible safety alarms FZONE Aquarium ATO System, QST2.0 Auto Top Off Controller for Tanks **Brand:** fzone **Price:** $184.30 **Availability:** ✅ In Stock ## Summary > 💧 Keep your aquarium flawless—automate with precision and peace of mind! ## Quick Answers - **What is this?** FZONE Aquarium ATO System, QST2.0 Auto Top Off Controller for Tanks by fzone - **How much does it cost?** $184.30 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/564536018-fzone-aquarium-ato-system-qst2-0-auto-top-off-controller) ## 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 - • **Smart Safety Alarms:** QST 2.0 tech triggers beeping & flashing alerts to prevent overfill and sensor errors. - • **Effortless Operation:** One-touch pause, resume, and initialization with the upgraded FZ button for ultimate convenience. - • **Quiet & Powerful Pump:** Compact 74 GPH pump with 2-meter lift height ensures steady, whisper-quiet refills. - • **Complete Plug & Play Kit:** Includes magnets, check valve, and 6ft tubing for fast, hassle-free installation. - • **Precision Water Level Control:** Dual optical sensors maintain water level within 0.6 cm for flawless aquarium balance. ## Overview The FZONE Auto Top Off System 2.0 features dual high-precision optical sensors and a 74 GPH micro pump to maintain aquarium water levels within 0.6 cm. Equipped with advanced QST 2.0 safety alarms and a user-friendly controller with pause/resume functions, it ensures reliable, quiet operation for both saltwater and freshwater tanks. The compact design fits rimmed, rimless, and sump tanks, and the complete accessory kit enables quick installation, making it ideal for busy professionals who want worry-free aquarium maintenance. ## Description 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 : desertcart.co.uk: 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 six 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C68N3WK9 | | Best Sellers Rank | 61,443 in Pet Supplies ( See Top 100 in Pet Supplies ) 192 in Aquarium Water Pumps | | Brand | FZONE | | Colour | Blue | | Country of Origin | China | | Customer Reviews | 4.1 4.1 out of 5 stars (456) | | Flow Rate | 1.23 Gallons Per Minute | | Included Components | 1 | | Item Dimensions L x W x H | 5L x 3W x 3H millimetres | | Item Highlight | Smart ATO system with precise controller for saltwater and freshwater aquariums, maintaining stable water levels | | Item Weight | 0.4 Kilograms | | Manufacturer | FZONE | | Material | Plastic | | Maximum Lifting Height | 2 Metres | | Model Number | FZ-580P | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | ATO-580P | | Power source | AC/DC | | Product Style | Compact | | Unit Count | 1.0 count | | Usage | Travel, Vacation | | Voltage | 15 Volts | ## Product Details - **Brand:** FZONE - **Colour:** Blue - **Item weight:** 0.4 Kilograms - **Material:** Plastic - **Maximum flow rate:** 1.23 Gallons Per Minute - **Maximum lifting height:** 2 Metres - **Power source:** AC/DC - **Product dimensions:** 5L x 3W x 3H millimetres - **Style:** Compact - **Voltage:** 15 Volts ## Images ![FZONE Aquarium ATO System, QST2.0 Auto Top Off Controller for Tanks - Image 1](https://m.media-amazon.com/images/I/51LdVhZJ0ML.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.us/products/564536018-fzone-aquarium-ato-system-qst2-0-auto-top-off-controller](https://www.desertcart.us/products/564536018-fzone-aquarium-ato-system-qst2-0-auto-top-off-controller) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-10-13*