Fish & Aquatic Aquarium Heaters
Fish & Aquatic Aquarium Heaters for UK pet owners — 177 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.
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Overview Meet the HITOP 800W Titanium Aquarium Heater, a robust heating solution designed for sizable tanks from 100 to 250 gallons. Built with a titanium alloy heating element, it offers durability and corrosion resistance for both saltwater and freshwater setups. The external controller paired...
- £53.36
- £53.36
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Meet the YukiHalu 100W Aquarium Heater, engineered for reliable warmth in small tanks. This model is suitable for 10 to 20 gallon aquariums and works with both saltwater and freshwater setups. A protective outer case guards the heater while keeping your aquatic inhabitants safe,...
- £43.20
- £43.20
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Meet the MODUODUO 200W Aquarium Heater, a submersible heating solution designed for reliability in both marine saltwater and freshwater setups. With a 12 inch heating rod and two sturdy suction cups, this heater fits neatly behind décor in 40 to 60 gallon tanks, delivering...
- £24.88
- £24.88
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Precision, Safety, and Style for Your Aquarium The Finnex HMU Titanium Aquarium Heater is built for reliable warmth with a focus on durability and accuracy. Its titanium heating tube delivers strong heat transfer while resisting corrosion, ensuring steady warmth throughout your tank across a...
- £74.75
- £74.75
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OverviewThe HITOP 600W Titanium Aquarium Heater is built for larger aquariums, covering 75 to 180 gallons with steady, reliable warmth. It combines a digital dual-temperature display, an external controller, and a rugged titanium heating element to support a stable aquatic environment.Designed with both clarity...
- £50.20
- £50.20
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Meet the hygger Pinpoint 100 Watt heater, a compact solution for maintaining stable temperatures in saltwater and reef tanks. Engineered to be fully submersible and mounted horizontally with two suction cups, it blends discreetly with your filtration and décor while delivering consistent warmth. The...
- £64.82
- £64.82
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Reliable warmth for freshwater and saltwater tanksThe Carefree Fish PTC Ceramic Aquarium Heater is built to deliver steady, dependable heat for a wide range of tank sizes. Available across wattage options from 200 to 800 W, it is designed to fit both small and...
- £42.18
- £42.18
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Meet the HiTauing AP01 Aquarium Heater Designed to keep water temperatures stable across saltwater and freshwater setups, the HiTauing AP01 series uses an intelligent IC chip with PID monitoring to track water temperature in real time and adjust heating accordingly. Available in 300W, 500W,...
- £40.15
- £40.15
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Stable, reliable warmth for your aquatic world The AQQA fish tank heater is engineered to support consistent temperatures across a wide range of tanks. Its rugged outer shell protects sensitive internals from humidity and heat, while a high‑purity nickel heating element delivers steady warmth...
- £29.97
- £29.97
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Overview The hygger 200W submersible aquarium heater is built for reliable warmth in tanks from 20 to 55 gallons. Its durable quartz core sits behind an impact‑resistant ABS guard, pairing sturdy construction with an 11.2‑inch profile that fits neatly into both compact and larger...
- £48.29
- £48.29
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Overview The AQQA Fish Tank Heater is built for reliable warmth in home aquariums. It combines a corrosion-resistant protective case, a high-purity nickel heating element, and an explosion-proof quartz glass tube with an external dual-display controller for easy temperature monitoring and adjustment. This design...
- £32.01
- £32.01
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Maintaining a stable, comfortable aquatic environment starts with precise warmth. The VCRAZE 300W aquarium heater is designed for tanks from 40 to 75 gallons, bringing consistent heat to both freshwater and seawater setups. Its thoughtful design also makes it a viable option for turtle...
- £46.25
- £46.25
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Compact warmth, reliable control for small tanks The AquaMiracle 25W heater is built for 1–5 gallon setups, including freshwater and saltwater tanks, turtle enclosures, fountains, and even seedling trays. Its slim profile tucks neatly behind decor, while a bright LED digital display keeps current...
- £34.04
- £34.04
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Compact Comfort for Small Tanks The AquaMiracle Adjustable 15W Aquarium Heater is designed for tiny aquariums—from 1 to 3 gallons—where space is at a premium. Its super-short profile tucks neatly behind décor while delivering reliable warmth, making it a practical choice for nano tanks...
- £27.94
- £27.94
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Compact, reliable heating for small aquariums For hobbyists managing 5–15 gallon tanks, stable water warmth can help create a calm, predictable environment for tropical fish, small reptiles, or mixed species. The AQUANEAT 50W Aquarium Heater fits neatly into tight spaces with a slim 6.75"...
- £25.79
- £25.79
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Compact warmth for small aquariums The hygger Mini 20W Submersible Heater is purpose-built for tiny aquatic setups, delivering steady warmth in 1–5 gallon tanks without dominating the tank’s look. Its slim, black profile hides neatly on the tank wall, and the 4" long x...
- £29.97
- £29.97
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Reliable warmth for your aquarium The AQUANEAT 300W Aquarium Heater is designed to keep 40–75 gallon tanks comfortably warm, whether you maintain freshwater communities or marine setups. At 11.5 inches long, this compact heater sits neatly behind decor or near the filter, while a...
- £27.91
- £27.91
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Meet HITOP's compact submersible heater, designed for flexible setups from a 1-gallon betta bowl to larger 70-gallon tanks. Available in 25W, 50W, 100W, 200W, and 300W, this heater pairs a simple external controller with a durable, fish-friendly body. The 68–93°F adjustment range fits a...
- £28.93
- £28.93
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HITOP Mini 50W Submersible Aquarium Heater Compact yet capable, this HITOP heater is designed for small tanks from 5 to 15 gallons, suitable for freshwater and saltwater setups, including betta habitats and turtle enclosures. Its slim profile helps preserve the look of your tank...
- £29.95
- £29.95
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Reliable warmth for small tanks with HITOP Designed for compact aquatic setups, the HITOP 100W adjustable aquarium heater combines a slim 8.8-inch form factor with thoughtful features that help you maintain a comfortable environment for your fish and plants. The unit’s 4.9-foot power cord...
- £27.92
- £27.92
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