Fish & Aquatic Aquarium Heaters & Chillers
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Quiet, Efficient Aquarium Cooling for Every Tank Heat in an aquarium often comes from water pumps, built-in filters, wave devices, and especially lighting. Hygger's 3 head aquarium chillers fan offers a quiet, energy-saving way to help maintain more stable water temperatures without adding noise...
- £46.63
- £46.63
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Compact power for larger tanks Meet the AquaMiracle Adjustable 300W Aquarium Heater—a compact submersible warmer designed for tanks in the 40–60 gallon range. Its unusually short profile lets you tuck it behind rockwork, plants, or décor without sacrificing heating power. Despite its small footprint,...
- £41.50
- £41.50
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Overview The UPETTOOLS 50W Mini Aquarium Heater is crafted for compact tanks sized 5–10 gallons. It combines a stable nickel-chromium heating wire with silicon carbide heat conduction to warm water efficiently while helping maintain a steady temperature. The dual-mode thermostat supports a flexible 68–93°F...
- £38.43
- £38.43
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Compact warmth for tiny tanks Meet hygger’s compact submersible heater, designed to fit small glass or acrylic aquariums. It supports freshwater and marine setups and delivers stable warmth in tanks from roughly 5 to 26 gallons, with wattage options to fit your space and...
- £32.27
- £32.27
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Overview Meet the Orlushy Submersible Aquarium Heater, a dependable 300W heater designed for 40–55 gallon tanks. Its 11-inch body sits discreetly in the aquarium, while a 6-foot power cord offers flexible placement options that stay neatly out of sight behind rocks, plants, or decor....
- £30.93
- £30.93
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Compact Power for Nano TanksIn small aquatic setups, space matters as much as warmth. The AquaMiracle Adjustable 10W Small Aquarium Heater is purpose-built for 1-2 gallon tanks, including betta habitats and tiny turtle enclosures. Its thumb-size body slides behind décor or nests neatly under...
- £32.27
- £32.27
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HANLESHUKA Submersible Aquarium Heater: Safe, Efficient, and Ready for Diverse Aquariums Engineered for durability, the HANLESHUKA submersible heater combines explosion-proof quartz glass with ultra-fast nickel-chromium heating wires. The thick black ABS shell adds rugged protection, helping this heater withstand daily tank life while delivering...
- £37.40
- £37.40
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Compact, capable: the VCRAZE 50W Aquarium Heater for small tanks Designed for 5 to 10 gallon aquariums, this ultra‑compact heater minimizes intrusion while delivering dependable warmth. The integrated digital display keeps you informed with both the current water temperature and the target setting for...
- £34.32
- £34.32
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Compact reliability for small tanks The hygger Mini 50W Submersible Heater is purpose-built for 5-10 gallon setups, including betta aquariums. Its low-profile black housing hides neatly inside your tank, giving you reliable warmth without crowding the aquascape. At just under 4 inches long and...
- £32.27
- £32.27
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Compact, powerful heating for small tanks The VCRAZE Mini Aquarium Heater brings dependable warmth to 3-5 gallon tanks without crowding your setup. At 25 watts, its ultra-tiny footprint fits neatly behind decor or plants while delivering stable warmth for your aquatic friends. With a...
- £32.27
- £32.27
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Overview The hygger Pinpoint Saltwater Heater is designed to help you maintain a stable aquarium temperature with precision and ease. Its titanium tube construction avoids fragile glass, reducing the risk of breakage and corrosion in marine environments, making it suitable for both saltwater reefs...
- £70.23
- £70.23
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Precision temperature control for aquariums The Eheim Jäger 200-watt heater, sized at 16 inches, is built for mid to larger tanks. It combines German engineering with a practical calibration feature that lets you fine tune the readout to the actual water temperature. This can...
- £52.91
- £52.91
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Overview Meet the HITOP 1000W Digital Aquarium Heater, a high-capacity submersible heater designed for large freshwater or saltwater setups up to 300 gallons. It pairs a robust heating element with an external control box that clearly displays both the live tank temperature and the...
- £86.35
- £86.35
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The hygger aquarium heater HG079 line brings consistent warmth to your freshwater or saltwater tanks with a sturdy nickel-chromium heating element designed for faster, steadier heat transfer. An external digital controller delivers precise readings and easy adjustments, so you can tailor the environment to...
- £64.07
- £64.07
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Effortless Aquarium Temperature Mastery Meet the Inkbird ITC-308 Digital Temperature Controller, a compact solution designed to simplify how you manage heat and cooling in your aquarium. It can control both a heating device and a cooling/refrigeration device at the same time, or be used...
- £64.07
- £64.07
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Keep Aquarium Temperatures Consistent with a 1000W Digital Heater Engineered for larger tanks, the fishkeeper 1000W Aquarium Heater covers 106 to 264 gallon systems and supports both saltwater and freshwater setups. An external LED digital temperature controller makes adjustments straightforward, turning your tank into...
- £74.06
- £74.06
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Reliable heating for large aquariums and ponds The AQQA 1200W fish tank heater is designed to heat expansive setups, from 170 to 290 gallons, in both freshwater and saltwater environments. Built to deliver steady warmth, it blends rugged materials with smart controls for a...
- £81.24
- £81.24
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Overview Meet the MantaMaze Aquarium Heater, a versatile submersible heating solution designed for stability and safety across freshwater and saltwater tanks. Available in multiple wattages, it helps you tailor heating to your tank size (20–300 gallons) without guesswork, supporting calm, consistent aquatic environments for...
- £80.21
- £80.21
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Reliable cooling for aquariums and hydroponics BAOSHISHAN’s Aquarium Chiller is built to help maintain stable water temperatures in mid-sized systems. Designed around a compact 1/10 HP compressor, it can impact temperature with a confident, steady pace, making it a practical choice for 42-gallon tanks,...
- £287.46
- £287.46
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Smart, Safe Heating for Freshwater and Saltwater Aquariums The MantaMaze Aquarium Heater is engineered to deliver dependable warmth for your aquatic inhabitants while keeping the presentation clean and simple. Available in four wattages: 300W, 500W, 800W, and 1000W, it’s designed to suit tanks from...
- £52.79
- £52.79
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Fish & Aquatic Aquarium Heaters & Chillers for UK pet owners — 184 products with free UK delivery. Browse the full range below; stock and prices update live.
Popular picks include hygger Aquarium Heater 300W-1000W | Submersible with Dig; HiTauing Aquarium Heater — Submersible 50W-500W with Ove; HiTauing 300W Aquarium Heater — Submersible with LED Dig.


























