{"niche":"What is the best aquarium heater for a large tank (over 55 gallons)?","description":"What is the best aquarium heater for a large tank (over 55 gallons)?","products":[{"brand":"Finnex","model":"THD-500S Titanium Heating Element w Guard (500 Watt)","price_gbp":28.65,"origin_country":null,"specs":{"wattage":"500","dimensions":"12.5 in x 0.62 in x null","temperature_range":null,"submersible_or_hang_on":"Submersible (element only, requires controller)","heating_element_material":"Titanium","adjustable_temperature_control":"No (requires external controller)"},"confidence_score":null,"summary":"Slim, corrosion-resistant 500 W titanium heater element with protective guard for saltwater and freshwater aquariums. Designed for large tanks and to be used with a separate temperature controller, it suits serious hobbyists and reef keepers needing durable, stable heating.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Premium Aquatics","url":"https://premiumaquatics.com/products/finnex-500w-thd-titanium-heater-element","currency":"USD","source_country":"US","price":38.24,"price_gbp":28.65,"scraped_at":"2026-06-08T21:13:41.745341"},{"label":"SaltwaterAquarium.com","url":"https://www.saltwateraquarium.com/500-watt-titanium-heater-element-only-w-guard-70-130-gallon-finnex/","currency":"USD","source_country":"US","price":59.49,"price_gbp":44.57,"scraped_at":"2026-06-08T21:13:44.762623"},{"label":"Champion Lighting & Supply","url":"https://championlighting.com/finnex-300w-titanium-heater-element-2.html","currency":"USD","source_country":"US","price":43.25,"price_gbp":32.4,"scraped_at":"2026-06-08T21:13:47.911291"}]},{"brand":"Finnex","model":"STE-400 Titanium Heater with Controller (STE-400)","price_gbp":60.49,"origin_country":null,"specs":{"wattage":"400","dimensions":null,"temperature_range":null,"submersible_or_hang_on":"Submersible","heating_element_material":"Titanium","adjustable_temperature_control":true},"confidence_score":null,"summary":"The STE-400 is a 400W titanium aquarium heater with a waterproof digital controller, corrosion-resistant titanium tube, safety guard and built-in fuse. It offers precise temperature control for medium to large tanks and suits both freshwater and saltwater aquarists who want a durable, shatterproof heater.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"AquaCave","url":"https://aquacave.com/finnex-ste-400-titanium-heater-with-controller.html","currency":"USD","source_country":"US","price":106.99,"price_gbp":80.16,"scraped_at":"2026-06-08T21:14:00.072141"},{"label":"Aquarium Specialty","url":"https://www.aquariumspecialty.com/finnex-ste-series-titanium-heater.html","currency":"USD","source_country":"US","price":80.74,"price_gbp":60.49,"scraped_at":"2026-06-08T21:14:03.093760"}]},{"brand":"Eheim","model":"Jager Aquarium Thermostat Heater 300W (for up to 80 gallon)","price_gbp":29.18,"origin_country":null,"specs":{"wattage":"300","dimensions":"20 in x 1.4 in x null","temperature_range":"18 to 34","submersible_or_hang_on":"Submersible","heating_element_material":"laboratory-grade glass jacket","adjustable_temperature_control":true},"confidence_score":null,"summary":"The Eheim Jäger TruTemp 300W is a fully submersible glass-sleeved aquarium heater with precise adjustable temperature control (18-34 °C) and automatic dry-run safety. It suits medium to large freshwater or saltwater tanks requiring stable, even heating.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Ken's Fish","url":"https://kensfish.com/products/eheim-jager-submersible-heater-300-watt","currency":"USD","source_country":"US","price":42.59,"price_gbp":31.91,"scraped_at":"2026-06-08T21:14:14.983239"},{"label":"SaltwaterAquarium.com","url":"https://www.saltwateraquarium.com/ebo-jager-heater-300-watt-eheim/","currency":"USD","source_country":"US","price":38.95,"price_gbp":29.18,"scraped_at":"2026-06-08T21:14:18.139253"},{"label":"Premium Aquatics","url":"https://premiumaquatics.com/products/eheim-jager-trutemp-submersible-aquarium-heater-300w","currency":"USD","source_country":"US","price":38.95,"price_gbp":29.18,"scraped_at":"2026-06-08T21:14:21.351937"}]},{"brand":"Cobalt","model":"Neo-Therm Submersible 300W Electronic Heater (Neo-Therm 300)","price_gbp":33.68,"origin_country":null,"specs":{"wattage":"300","dimensions":null,"temperature_range":null,"submersible_or_hang_on":"Submersible","heating_element_material":null,"adjustable_temperature_control":true},"confidence_score":null,"summary":"Slim, shatterproof, fully submersible electronic heater with digital LED display and touch controls. Suited for aquariums requiring precise temperature control and a low-profile heater.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Kwik Pets","url":"https://www.kwikpets.com/products/cobalt-neo-therm-plastic-led-heater-300-watt","currency":"USD","source_country":"US","price":129.65,"price_gbp":97.13,"scraped_at":"2026-06-08T21:14:33.186923"},{"label":"AquaCave","url":"https://aquacave.com/cobalt-heaters-50w-300w/","currency":"USD","source_country":"US","price":44.95,"price_gbp":33.68,"scraped_at":"2026-06-08T21:14:36.193216"}]},{"brand":"Aqueon","model":"Pro Adjustable Heater 300W (Aqueon Pro 300W)","price_gbp":22.47,"origin_country":null,"specs":{"wattage":"300 W","dimensions":"9 in x 1.5 in x 1.75 in","submersible_or_hang_on":"Fully submersible","heating_element_material":"Aluminum core","adjustable_temperature_control":"Yes, electronic thermostat adjustable 20 to 31 °C"},"confidence_score":null,"summary":"Durable, shatterproof submersible heater with an aluminum heating core and an electronic adjustable thermostat (approx. 20-31 °C). Suited for freshwater and saltwater aquaria up to about 100 gallons and for users needing a robust, precision-calibrated heater.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Aqueon","url":"https://www.aqueon.com/products/heating/pro-adjustable-aquarium-heater","currency":"USD","source_country":"US","price":29.99,"price_gbp":22.47,"scraped_at":"2026-06-08T21:14:48.131862"},{"label":"HardyPaw","url":"https://hardypaw.com/products/aqueon-adjustable-pro-aquarium-heater","currency":"USD","source_country":"US","price":55.99,"price_gbp":41.95,"scraped_at":"2026-06-08T21:14:51.138842"}]},{"brand":"Helio","model":"Helio Titanium Heater 500W with External Controller","price_gbp":89.9,"origin_country":null,"specs":{"wattage":"500","dimensions":"3.13 in x 1.31 in x 5 in","temperature_range":null,"submersible_or_hang_on":"Submersible element with external controller","heating_element_material":"Titanium","adjustable_temperature_control":true},"confidence_score":null,"summary":"The Helio 500W PTC heater is a titanium, PTC self-regulating aquarium heating system that uses an external controller with a remote titanium temperature probe for redundant safety and audible alarms. It suits reef and saltwater hobbyists who want stable, fail-safe heating for large aquariums (85-125 gallons).","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Innovative Marine (official store)","url":"https://www.innovative-marine.com/shop/Heaters-c64553009","currency":"USD","source_country":"US","price":null,"price_gbp":null,"scraped_at":"2026-06-08T21:15:02.879528"},{"label":"Bulk Reef Supply","url":"https://www.bulkreefsupply.com/helio-ptc-smart-heaters-innovative-marine.html","currency":"USD","source_country":"US","price":null,"price_gbp":null,"scraped_at":"2026-06-08T21:15:05.913336"},{"label":"Top Shelf Aquatics","url":"https://topshelfaquatics.com/products/helio-ptc-smart-aquarium-heater-innovative-marine","currency":"USD","source_country":"US","price":119.99,"price_gbp":89.9,"scraped_at":"2026-06-08T21:15:08.946238"}]},{"brand":"Hygger","model":"Digital Titanium Heater 500W w External Controller (Hygger 500W)","price_gbp":29.21,"origin_country":null,"specs":{"wattage":"500W","dimensions":"27 x 2.3 x null cm","temperature_range":"16-33°C","submersible_or_hang_on":"Submersible","heating_element_material":"Titanium tube (with quartz glass and nickel-chromium wire components)","adjustable_temperature_control":true},"confidence_score":null,"summary":"Digital titanium aquarium heater with an external controller and temperature probe, fast heating, IP68 waterproofing, and multiple safety protections; suitable for freshwater and saltwater tanks and larger aquaria. Best for hobbyists who need precise external temperature control and durable, corrosion-resistant heating for reef or marine setups.","pros":null,"cons":null,"ideal_for":null,"sources":[{"label":"Hygger official store","url":"https://www.hyggeraquarium.com/product/hygger-aquarium-titanium-heater-with-digital-led-controller-and-temperature-probe-for-saltwater-freshwater/","currency":"USD","source_country":"US","price":38.99,"price_gbp":29.21,"scraped_at":"2026-06-08T21:15:20.743328"},{"label":"Cuboid Aquatics","url":"https://cuboidstore.com/products/hygger-titanium-heater-with-digital-controller-and-temperature-probe","currency":"USD","source_country":"US","price":38.99,"price_gbp":29.21,"scraped_at":"2026-06-08T21:15:23.870107"},{"label":"BucePlant","url":"https://buceplant.com/products/hygger-submersible-titanium-pinpoint-aquarium-heater","currency":"USD","source_country":"US","price":82.99,"price_gbp":62.18,"scraped_at":"2026-06-08T21:15:26.937901"}]}]}