Automated Water Testing. Smarter Decisions. A More Stable Reef. Take reef automation to the next level with the Focustronic Mastertronic, an advanced automatic water testing system that continuously measures critical water parameters and provides the data needed to maintain a thriving reef aquarium. Designed for serious hobbyists, the Mastertronic helps eliminate manual testing while giving you valuable insight into your aquarium's chemistry. Watch the product video below to see the Mastertronic in action. Product Description The Focustronic Mastertronic is a fully automated water testing system capable of monitoring multiple critical reef parameters without the need for manual testing. Using a precision colorimetric testing system combined with high-precision pumps and intelligent automation, the Mastertronic performs scheduled tests, records historical data, and communicates seamlessly with other Focustronic equipment. When paired with the Alkatronic and Dosetronic, the Mastertronic becomes part of a fully automated reef ecosystem capable of monitoring water chemistry and adjusting dosing automatically to help maintain long-term stability. Key Features Automated Multi-Parameter Testing Automatically tests important reef parameters including: Nitrate (NO₃) Phosphate (PO₄) Calcium (Ca) Magnesium (Mg) Alkalinity (dKH) OLI (Organic Load Index) Future parameter support may be added through software updates. High-Precision Colorimetric Testing The Mastertronic combines precision pumps with a state-of-the-art colorimetric photosensor to provide accurate, repeatable test results. Typical accuracy includes: Calcium: ±6 ppm Magnesium: ±20 ppm Nitrate: ±0.5 ppm Phosphate: ±0.01 ppm Alkalinity: ±0.1 dKH Fully Automated Scheduling Schedule tests throughout the day and review historical trends from anywhere using the Focustronic App. Receive alerts and notifications whenever parameters fall outside your desired range. Smart Wi-Fi Connectivity Control the Mastertronic through the Focustronic All-In-One App. Features include: Remote monitoring Historical charts Test scheduling Notifications Automatic firmware updates Cloud connectivity Complete Focustronic Integration Communicates with: Alkatronic Dosetronic Powertronic Solartronic Together these devices create one of the most advanced reef automation ecosystems available. Why Choose the Mastertronic? Unlike single-parameter testers, the Mastertronic provides automated testing for multiple critical reef parameters using widely available third-party test kits. This allows reef keepers to spend less time performing manual tests while gaining more frequent and consistent data to make better decisions for their aquarium. For hobbyists seeking the highest level of automation, pairing the Mastertronic with the Alkatronic and Dosetronic creates a complete monitoring and dosing solution capable of maintaining exceptional reef stability. Specifications Brand: Focustronic Model: Mastertronic Aquarium Type: Saltwater / Reef Testing Method: Automated Colorimetric Analysis Measures: Nitrate Phosphate Calcium Magnesium Alkalinity Organic Load Index (OLI) Connectivity: Wi-Fi Cloud Mobile App Dimensions: Approximately 13" × 8.9" × 13.6" Compatible Test Kits Supports a variety of popular third-party test kits, including compatible options from: Red Sea Salifert API Fauna Marin Tropic Marin Giesemann JBL Colombo Compatibility varies by parameter. What's Included Mastertronic Automated Water Tester Power Supply Tubing & Connections Setup Accessories Quick Start Documentation Test kit reagents sold separately. Shipping This product ships using our Large Shipping service for a flat $45.99 anywhere within the contiguous United States. Orders are typically processed within 1–3 business days, excluding weekends and holidays. Tracking information will be emailed once your order ships. Due to the size, value, and precision of this equipment, it may ship separately from other items in your order to help ensure safe delivery. Why Buy From Infinity and Beyond Aquatics? At Infinity and Beyond Aquatics, we believe consistency is the key to a successful reef aquarium. That's why we offer advanced automation equipment from trusted brands like Focustronic, helping hobbyists reduce manual maintenance while improving water quality and long-term stability. Whether you're building a fully automated SPS system or simply looking to eliminate repetitive testing, we're here to help you choose equipment that delivers professional-level performance.
