--- product_id: 541255634 title: "Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater Aquarium & Freshwater Aquarium" brand: "fzone" price: "£84.91" currency: GBP in_stock: true category: "Fzone" url: https://www.desertcart.co.uk/products/541255634-aquarium-ato-with-controller-qst2-0-auto-top-off-system store_origin: GB region: United Kingdom --- # 74 GPH micro pump flow 0.79 in optical sensor size QST 2.0 real-time overfill safety Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater Aquarium & Freshwater Aquarium **Brand:** fzone **Price:** £84.91 **Availability:** ✅ In Stock ## Summary > 💧 Keep your aquarium flawless and worry-free with FZONE’s smartest Auto Top Off system! ## Quick Answers - **What is this?** Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater Aquarium & Freshwater Aquarium by fzone - **How much does it cost?** £84.91 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/541255634-aquarium-ato-with-controller-qst2-0-auto-top-off-system) ## 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 Monitoring:** QST 2.0 tech halts refilling and alerts you instantly if water exceeds preset limits or sensors fail. - • **Reliable Support & Warranty:** Backed by a 2-year warranty and 24/7 customer service to keep your aquarium thriving without worry. - • **Precision Water Level Control:** Dual optical sensors maintain water levels within 0.6 cm for flawless aquarium balance. - • **Effortless Setup & Versatility:** Includes strong magnets, check valve, and 6-foot tubing for quick installation on rimmed, rimless, or sump tanks. - • **Whisper-Quiet Pump Performance:** Compact micro pump delivers 74 gallons per hour with minimal noise, perfect for serene environments. ## Overview The FZONE Aquarium ATO QST2.0 is a cutting-edge auto top-off system designed for both saltwater and freshwater tanks. Featuring dual optical sensors for precise water level maintenance within 0.6 cm, a whisper-quiet 74 GPH micro pump, and advanced QST 2.0 safety technology that prevents overfilling and detects sensor issues. Compact and versatile, it fits various tank types and includes all necessary accessories for easy installation. Supported by a 2-year warranty and round-the-clock customer service, it ensures your aquarium stays perfectly balanced even during your busiest days or travels. ## Description desertcart.com : FZONE Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater Aquarium & Freshwater Aquarium : 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 | #23,082 in Pet Supplies ( See Top 100 in Pet Supplies ) #61 in Aquarium Water Pumps | | Brand Name | FZONE | | Color | Blue2 | | Customer Reviews | 4.0 4.0 out of 5 stars (416) | | Flow Rate | 1.23 Gallons Per Minute | | Included Components | prevent backflow | | Item Dimensions L x W x H | 0.2"L x 0.1"W x 0.1"H | | Item Weight | 0.4 Kilograms | | 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 | | Power Source | Corded Electric | | Product Style | Auto | | Specific Uses For Product | Aquarium | | Unit Count | 1.0 Count | | Voltage | 15 Volts | ## Product Details - **Brand:** FZONE - **Color:** Blue2 - **Item Weight:** 0.4 Kilograms - **Material:** Polypropylene (PP) - **Maximum Flow Rate:** 1.23 Gallons Per Minute - **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 with Controller, QST2.0 Auto Top Off System for Saltwater Aquarium & Freshwater Aquarium - 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.co.uk/products/541255634-aquarium-ato-with-controller-qst2-0-auto-top-off-system](https://www.desertcart.co.uk/products/541255634-aquarium-ato-with-controller-qst2-0-auto-top-off-system) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-07-21*