--- product_id: 619153697 title: "FZONE Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater & Freshwater Tanks" brand: "fzone" price: "R$1589" currency: BRL in_stock: true category: "Fzone" url: https://www.desertcart.com.br/products/619153697-fzone-aquarium-ato-with-controller-qst2-0-auto-top-off store_origin: BR region: Brazil --- # 74 GPH micro pump flow 0.79 in optical sensor size QST 2.0 overfill safety FZONE Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater & Freshwater Tanks **Brand:** fzone **Price:** R$1589 **Availability:** ✅ In Stock ## Summary > 💦 Keep your tank flawless, even when you’re away! ## Quick Answers - **What is this?** FZONE Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater & Freshwater Tanks by fzone - **How much does it cost?** R$1589 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/619153697-fzone-aquarium-ato-with-controller-qst2-0-auto-top-off) ## 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:** Real-time overfill protection and sensor diagnostics prevent costly tank mishaps. - • **Effortless Installation Kit:** Includes strong magnets, check valve, and 6-foot tubing for quick, hassle-free setup. - • **Reliable Support & Warranty:** Backed by 2-year warranty and 24/7 customer service to keep your aquarium thriving. - • **Precision Water Level Control:** Dual optical sensors maintain water levels within 0.6 cm for flawless tank balance. - • **Whisper-Quiet Pump Performance:** Compact 74 GPH pump operates silently, perfect for home or office 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 precision optical sensors, a whisper-quiet 74 GPH micro pump, and advanced QST 2.0 safety technology, it ensures stable water levels and prevents overfill. Compact and versatile, it fits rimmed, rimless, and sump tanks, with a complete accessory kit for easy installation. Perfect for busy professionals who want peace of mind and a thriving aquatic environment, supported by a 2-year warranty and round-the-clock customer service. ## Description Evaporation is every tank owner’s constant enemy. Auto top off systems are a crucial piece of any fish tank. FZONE Automatic Top-Off (ATO) systems provide convenient assurances. The products use water from a reservoir to refill tank or sump levels. This helps maintain specific gravity and salinity. In particular, this is important in reef and marine tanks. Drops in these levels increase stress on fish and can be fatal. ## 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 | #66,950 in Pet Supplies ( See Top 100 in Pet Supplies ) #676 in Water Pumps (Pet Supplies) | | Brand Name | FZONE | | Colour | Blue2 | | Customer Reviews | 4.1 4.1 out of 5 stars (434) | | Flow Rate | 1.23 Gallons Per Minute | | Included Components | prevent backflow | | Item Dimensions L x W x H | 5L x 3W x 3H Millimeters | | Item Type Name | ATO | | Item Weight | 0.4 Kilograms | | Manufacturer | FZONE | | Manufacturer Part Number | ATO-580P | | Material Type | Polypropylene (PP) | | Maximum Lifting Height | 2 Metres | | Model Number | FZ-580P | | Number of Items | 1 | | Power Source | Corded Electric | | Product Style | Auto | | Specific Uses For Product | Aquarium | | Unit Count | 1.0 Count | | Voltage | 15 Volts | ## Product Details - **Brand:** FZONE - **Colour:** Blue2 - **Item Weight:** 0.4 Kilograms - **Material:** Polypropylene (PP) - **Maximum Flow Rate:** 1.23 Gallons Per Minute - **Maximum Lifting Height:** 2 Metres - **Power Source:** Corded Electric - **Product Dimensions:** 5L x 3W x 3H Millimeters - **Style:** Auto - **Voltage:** 15 Volts ## Images ![FZONE Aquarium ATO with Controller, QST2.0 Auto Top Off System for Saltwater & Freshwater Tanks - Image 1](https://m.media-amazon.com/images/I/51LdVhZJ0ML.jpg) ## Available Options This product comes in different **Size** options. ## 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.com.br/products/619153697-fzone-aquarium-ato-with-controller-qst2-0-auto-top-off](https://www.desertcart.com.br/products/619153697-fzone-aquarium-ato-with-controller-qst2-0-auto-top-off) --- *Product available on Desertcart Brazil* *Store origin: BR* *Last updated: 2026-09-30*