{"product_id":"aqua-one-glass-tank-heater-series-fully-submersible-automatic-reservoir-heaters","title":"Aqua One - Glass Tank Heater Series – Fully Submersible Automatic Reservoir Heaters","description":"\u003csection\u003e\n\u003ch3\u003eAqua One - Glass Tank Heater Series – Fully Submersible Automatic Reservoir Heaters\u003c\/h3\u003e\n\u003cp\u003eMaintain total control over your nutrient solution temperature with the Aqua One Glass Tank Heater Series. In sub-irrigated and hydroponic systems, cold reservoir water can shock delicate root zones, severely stunting plant growth, locking out vital nutrients, and reducing oxygen absorption rates. These high-quality, highly economical glass heaters provide the ultimate shield against seasonal drops. Engineered with double insulation for absolute electrical safety, each unit is completely submersible and features an integrated micro-thermostat dial for effortless temperature adjustments. Equipped with a bright, automatic on\/off indicator light, the heater monitors water temperatures continuously—firing up instantly when the solution chills and cycling off once your target environment is perfectly achieved.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e Automated hydroponic systems, standard nutrient mixing reservoirs, Deep Water Culture (DWC) master tanks, cloning and propagation arrays during winter, and indoor grow rooms experiencing cold night cycles.\u003c\/p\u003e\n\u003ch3\u003eChoose Your Thermal Capacity\u003c\/h3\u003e\n\u003cp\u003eSelect the ideal wattage based on your overall active reservoir or nutrient fluid volume:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel Variant\u003c\/th\u003e\n\u003cth\u003eWattage Rating\u003c\/th\u003e\n\u003cth\u003eStandard Reservoir Capacity\u003c\/th\u003e\n\u003cth\u003eCold Environment Profile\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e55 Watt\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e55W Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 50 Litres\u003c\/td\u003e\n\u003ctd\u003eIdeal for small cloning reservoirs and individual DWC buckets.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e100 Watt\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100W Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 95 Litres\u003c\/td\u003e\n\u003ctd\u003ePerfect for standard grow tent reservoirs and multi-pot loops.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e200 Watt\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200W Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 190 Litres\u003c\/td\u003e\n\u003ctd\u003eEngineered for larger commercial mixing stations and mid-size tables.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e300 Watt\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300W Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 280 Litres\u003c\/td\u003e\n\u003ctd\u003eThe heavy-duty choice for master gravity storage tanks and expansive loops.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully Submersible Double Insulation:\u003c\/strong\u003e Built with a reinforced, heavy-gauge glass casing and a double-insulated internal heating core, allowing the entire unit to be completely submerged in water or nutrient solutions with absolute safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Automated Micro-Thermostat:\u003c\/strong\u003e Features a top-mounted, easy-to-use mechanical dial that locks in your desired temperature, removing the guesswork from seasonal root-zone management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighly Visible Temperature Guide:\u003c\/strong\u003e Designed with a clear, easy-to-read thermal index along the glass body, allowing you to quickly inspect and verify target thresholds during routine nursery walk-throughs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart On\/Off Indicator Light:\u003c\/strong\u003e The built-in indicator bulb illuminates the moment the internal heating coils draw power and switches off automatically once the target water temperature has been uniformly achieved.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Suction Mount Assembly:\u003c\/strong\u003e Bundled with premium, heavy-duty suction cup brackets that lock the glass body securely to the walls of plastic or glass reservoirs, preventing accidental movement or floating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Shock Resistance:\u003c\/strong\u003e Fabricated from specialized, high-tensile borosilicate-profile glass designed to withstand continuous heating cycles and concentrated horticultural mineral salts without cracking or corroding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications \u0026amp; Inclusions\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\u003eProduct Category:\u003c\/strong\u003e Submersible Thermostatic Glass Fluid Heater\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulation Certification:\u003c\/strong\u003e Double Insulated, IPX8 Waterproof Rating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Interface:\u003c\/strong\u003e Standard 240V Mains Power (AU\/NZ Plug Equipped)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Control:\u003c\/strong\u003e Integrated Mechanical Dial Adjustment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hardware Included:\u003c\/strong\u003e 2 x Heavy-Duty Rubber Suction Cups and Rigid Plastic Clip Brackets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNursery Layout \u0026amp; Fluid Thermal Management Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Critical Circulating Placement Rule:\u003c\/strong\u003e Always position your glass heater directly within a zone of highly active water circulation—such as right next to a submersible feed pump or directly above a churning **Hailea Magnetic Air Pump** airstone. Placing a heater in stagnant water creates localized hot spots, causing the thermostat to cycle off prematurely before the rest of the reservoir has reached temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVertical Mounting Mandate:\u003c\/strong\u003e For optimal internal thermal element calculation, always mount the glass heater in a completely **vertical position**. Ensure the entire glass body is fully submerged beneath the low-water line so the heating element does not crack from exposure to open air.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManaging Cold Micro-Climates:\u003c\/strong\u003e If your nutrient mixing tank is situated in an uninsulated outdoor greenhouse, a cold concrete floor, or a drafty grow room experiencing severe winter drops, the standard sizing rules may fall short. In these cold zones, always step up to the next larger size heater (e.g., using a 200W heater in a 95L tank) to ensure the system can comfortably hold its target temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Safety Cut-Out Protocol:\u003c\/strong\u003e Never pull an active or hot heater directly out of your reservoir. If you are doing a full reservoir clean-out or water change, unplug the heater from the mains power socket first and allow it to cool down in the liquid for at least 10–15 minutes before handling or lifting it out.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal For (Uses)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWinter Root-Zone Stabilization:\u003c\/strong\u003e Keeping delicate root micro-climates locked in the ideal 18°C–21°C sweet spot during freezing winter months, keeping vegetative growth running fast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomated Hydroponic Loops:\u003c\/strong\u003e Stabilizing incoming cold tap water inside primary supply reservoirs before it is pumped down to automated lines like **AutoPot Hydrotrays**.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Strike Cloning Stations:\u003c\/strong\u003e Elevating the base fluid temperature in propagation domes to stimulate rapid callus formation and explosive root strikes on fresh cuttings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"Holland Forge","offers":[{"title":"55W","offer_id":48424257585252,"sku":"8261","price":26.9,"currency_code":"AUD","in_stock":true},{"title":"100W","offer_id":48424257618020,"sku":"8262","price":28.9,"currency_code":"AUD","in_stock":true},{"title":"200W","offer_id":48424257650788,"sku":"8263","price":33.9,"currency_code":"AUD","in_stock":true},{"title":"300W","offer_id":48424257683556,"sku":"8264","price":38.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/6487\/0244\/files\/ChatGPTImageMay17_2026_02_14_17AM.png?v=1778955319","url":"https:\/\/www.greenhousepolytunnels.com.au\/products\/aqua-one-glass-tank-heater-series-fully-submersible-automatic-reservoir-heaters","provider":"Greenhouse \u0026 Polytunnels","version":"1.0","type":"link"}