{"product_id":"aqua-one-glass-reservoir-thermometer-precision-liquid-temperature-monitoring","title":"Aqua One - Glass Reservoir Thermometer – Precision Liquid Temperature Monitoring","description":"\u003csection\u003e\n\u003ch3\u003eAqua One - Glass Reservoir Thermometer – Precision Liquid Temperature Monitoring\u003c\/h3\u003e\n\u003cp\u003eMaintaining the correct nutrient solution temperature is critical for maximizing dissolved oxygen levels and preventing root zone pathogens like Pythium. The Aqua One Glass Thermometer provides a simple, highly reliable, and battery-free solution for monitoring your reservoir’s vitals. Specifically designed for constant submersion, this thermometer allows you to ensure your feed water stays within the \"goldilocks zone\" (typically 18°C–20°C) for optimal nutrient uptake. With its clear, easy-to-read scale and versatile mounting options, it is an essential piece of insurance for any hydroponic or aquaponic system.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e Nutrient reservoir monitoring, deep water culture (DWC) systems, propagation tanks, and aquaponic setups.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Visibility Analog Scale:\u003c\/strong\u003e Features a clear, high-contrast temperature scale that is easy to read through water or nutrient solutions without the need for digital calibration or batteries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Mounting Versatility:\u003c\/strong\u003e Equipped with a heavy-duty suction cup for fixed positioning against the side of your tank, or it can be allowed to float freely to monitor surface temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety-First Construction:\u003c\/strong\u003e Manufactured from laboratory-grade glass with a weighted base to ensure it remains vertical and visible at all times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-Free Reliability:\u003c\/strong\u003e Unlike digital alternatives, this thermometer is always \"on,\" providing a fail-safe backup that won't fail during critical growth phases due to electronic malfunctions or dead batteries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Corrosive Design:\u003c\/strong\u003e Built to withstand constant exposure to concentrated mineral salts, pH adjusters, and organic additives without degrading or leaching into your nutrient solution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Unobtrusive:\u003c\/strong\u003e The slim profile allows it to fit into even the most crowded reservoirs or small-scale propagation domes without obstructing pump intakes or air stones.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Aqua One\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Weighted Laboratory-Grade Glass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e 0°C to 50°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Removable Suction Cup (Included) or Floating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Hydroponics, Aquaponics, and Aquarium use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation \u0026amp; Maintenance Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrategic Placement:\u003c\/strong\u003e For the most accurate reading of your feed water, mount the thermometer away from your reservoir heater or the return line of your system to ensure you are measuring the \"bulk\" water temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuction Cup Prep:\u003c\/strong\u003e Before attaching the suction cup, ensure the reservoir wall is clean and free of algae or salt crust. This ensures a permanent grip that won't slip over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoutine Cleaning:\u003c\/strong\u003e During your weekly reservoir change, wipe down the glass exterior with a soft cloth to remove any nutrient film or mineral build-up. This maintains maximum visibility and ensures the thermometer reacts quickly to temperature shifts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxygen Management:\u003c\/strong\u003e Remember that as temperatures rise above 22°C, the water's ability to hold dissolved oxygen drops significantly. Use this thermometer to determine when it's time to add an air stone or a water chiller.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal For (Uses)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNutrient Reservoirs:\u003c\/strong\u003e Tracking the temperature of the \"main\" water supply to prevent heat stress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCloning \u0026amp; Propagation:\u003c\/strong\u003e Ensuring your misting water stays at the ideal temperature to encourage rapid root initiation in seedlings and cuttings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDWC Systems:\u003c\/strong\u003e Constant monitoring of the root zone temperature where oxygen stability is most critical.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"Holland Forge","offers":[{"title":"Default Title","offer_id":48418731819108,"sku":"5265","price":4.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/6487\/0244\/files\/ChatGPTImageMay15_2026_08_01_13PM.png?v=1778846513","url":"https:\/\/www.greenhousepolytunnels.com.au\/products\/aqua-one-glass-reservoir-thermometer-precision-liquid-temperature-monitoring","provider":"Greenhouse \u0026 Polytunnels","version":"1.0","type":"link"}