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Shop Premium Aquarium Pumps and Filters Online in Bulgaria

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hygger Small Aquarium Betta Heater, Submersible Fish Tank Heater 10W/25W/50W/100W with LED Digital Display, Suitable for Marine Saltwater and Freshwater up to 5/10/16/26 Gallon
US Магазин
hygger

hygger Small Aquarium Betta Heater, Submersible Fish Tank Heater 10W/25W/50W/100W ...
4.5

4k+ bought

€ 24

25Watt Mini Aquarium Submersible Betta Heater with Free Thermometer Strip for 1-6 Gallon Fish Tanks Preset Temperature 78F
US Магазин
PULACO

25Watt Mini Aquarium Submersible Betta Heater with Free Thermometer Strip for 1-6 ...
4.3

2k+ bought

€ 16

AQUANEAT Aquarium Heater, 25W Small Betta Fish Tank Heater, Mini Preset Water Thermostat with a Thermometer
US Магазин
AQUANEAT

AQUANEAT Aquarium Heater, 25W Small Betta Fish Tank Heater, Mini Preset Water ...
4.3

2k+ bought

€ 12

AQUASMITH Aquarium Chiller Fan,Fish Tank Cooler with Temperature Control,Minimum Setting 59F,Auto Start/Stop,Refrigeration Effect 3-7F,3-Speed Modes,for Axolotl Seawater Freshwater Coral Grass Tank
US Магазин
AQUASMITH

AQUASMITH Aquarium Chiller Fan,Fish Tank Cooler with Temperature Control,Minimum ...
4.4

1k+ bought

€ 57

20% ИЗКЛ
Orlushy 25W Small Submersible Aquarium Heater, Constant Temperature Betta Fish Tank Heater of 78Ffor 1-6 Gallons Freshwater & Saltwater Tanks
US Магазин
Orlushy

Orlushy 25W Small Submersible Aquarium Heater, Constant Temperature Betta Fish Tank ...
4

800+ bought

€ 16 20

PAIZOO Aquarium Chiller Fan, Ultra-Quiet Fish Tank Cooler with 3 Speed Mode | Effective Cooling 3-7F, Max Wind Speed 10ft/s, Fish Tank Cooling Fan for Axolotl Tank Accessories Freshwater Saltwater Tanks
US Магазин
PAIZOO

PAIZOO Aquarium Chiller Fan, Ultra-Quiet Fish Tank Cooler with 3 Speed Mode | ...
4.2

500+ bought

€ 33

Aquarium Fan,Ultra-Quiet Fish Tank Cooler,More Powerful,Cooling Effect 3-7F with 3 Speed Modes Adjustable Applicable Aquariums with or Without Edges, for Axolotl Seawater Freshwater Coral Grass Tank
US Магазин
AQUASMITH

Aquarium Fan,Ultra-Quiet Fish Tank Cooler,More Powerful,Cooling Effect 3-7F with 3 ...
4.4

400+ bought

€ 45

HITOP 25W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cups for 5-10Gal
US Магазин
HITOP

HITOP 25W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with ...
4.4

300+ bought

€ 16

HiTauing Aquarium Heater, 50W/100W/200W/300W/500W Submersible Fish Tank Heater with Over-Temperature Protection and Automatic Power-Off When Leaving Water for Saltwater and Freshwater
US Магазин
HiTauing

HiTauing Aquarium Heater, 50W/100W/200W/300W/500W Submersible Fish Tank Heater with ...
4.5

300+ bought

€ 53

Fluval M 50-Watt Submersible Aquarium Heater for Fresh & Saltwater Tanks | Compact, Reliable Heating with Mirror Technology
US Магазин
Fluval

Fluval M 50-Watt Submersible Aquarium Heater for Fresh & Saltwater Tanks | Compact, ...
4.5

200+ bought

€ 42

HITOP Compact Submersible Aquarium Heater -100w Digital Heater for Fish Tank Turtle Tank, for Saltwater and Fresh Water with Temperature Controller
US Магазин
HITOP

HITOP Compact Submersible Aquarium Heater -100w Digital Heater for Fish Tank Turtle ...
4.6

200+ bought

€ 28

9% ИЗКЛ
Mini Aquarium Heater 5V/2A USB 10W Super Small Fish Tank Heater with Digital Display Thermostat, Alumina Ceramic Betta Tank Heater Turtle Heater for Tanks up to 1 Gallon
US Магазин
VCRAZE

Mini Aquarium Heater 5V/2A USB 10W Super Small Fish Tank Heater with Digital ...
4.1

100+ bought

€ 21 23

12% ИЗКЛ
Orlushy 800W Submersible Aquarium Heater, Adjustable Fish Tank Heater with Digital Display External Controller, Overheat Protection and Free Thermometer for 80-175 Gallon Freshwater and Saltwater Tank
US Магазин
Orlushy

Orlushy 800W Submersible Aquarium Heater, Adjustable Fish Tank Heater with Digital ...
3.4

100+ bought

€ 50 57

TetraFauna Aquatic Reptile Heater 100 Watts, For Frogs, Newts And Turtles, Green
US Магазин
Tetra

TetraFauna Aquatic Reptile Heater 100 Watts, For Frogs, Newts And Turtles, Green
4.2

100+ bought

€ 38

3% ИЗКЛ
hygger Mini Fish Tank Submersible Heater 75W for 10-15 Gallons Small Betta Aquarium Heater with Digital Display Controller Adjustable Temperature
US Магазин
hygger

hygger Mini Fish Tank Submersible Heater 75W for 10-15 Gallons Small Betta Aquarium ...
4.2

100+ bought

€ 29 30

hygger 100W Submersible Aquarium Heater with Digital Temperature Controller, Mini Fish Tank Heater for 1020 Gallon Tanks, Overheat & Out-of-Water Protection, Freshwater & Saltwater
US Магазин
hygger

hygger 100W Submersible Aquarium Heater with Digital Temperature Controller, Mini ...

100+ bought

€ 32

DaToo Super Mini Aquarium Heater 6 Watts Small Fish Tank Flat Heater 6W with Free Thermometer Strip Submersible Slim Betta Heater for Up to 2 Gallon Desktop Aquariums
US Магазин
DaToo

DaToo Super Mini Aquarium Heater 6 Watts Small Fish Tank Flat Heater 6W with Free ...
4

100+ bought

€ 14

hygger Aquarium Chillers Fan, Quiet Fish Tank Cooling Fan Equipment with Adjustable Speed Controller, Suitable for Freshwater Saltwater Tanks3-Fan Head
US Магазин
hygger

hygger Aquarium Chillers Fan, Quiet Fish Tank Cooling Fan Equipment with Adjustable ...
4.4

100+ bought

€ 43

Small Fish Tank Heater - Mini Aquarium Heater | 50w Submersible Turtle Heater with Adjustable Temperature External Controller for 3 to 12 Gallon Betta Aquarium Tanks
US Магазин
boxtech

Small Fish Tank Heater - Mini Aquarium Heater | 50w Submersible Turtle Heater with ...
4.3

100+ bought

€ 37

PAIZOO Aquarium Chiller Fan, Quiet Fish Tank Cooling Fan with 3 Speed Modes | Cooling 3-7F, 24dB Ultra-Quiet, Suitable For Small Desktop Fish Tanks, Axolotl, Goldfish, Clownfish Tanks, USB Power Supply
US Магазин
PAIZOO

PAIZOO Aquarium Chiller Fan, Quiet Fish Tank Cooling Fan with 3 Speed Modes | ...

100+ bought

€ 28

PAIZOO Aquarium Fan for Axolotl with 3 Speed Modes for 10-30 Gallon Tank | Effective Cooling 3-7F, Powerful Dual Motors, 3600RPM, Ultra-Quiet Aquarium Cooler for Axolotl Betta Fish Accessories
US Магазин
PAIZOO

PAIZOO Aquarium Fan for Axolotl with 3 Speed Modes for 10-30 Gallon Tank | ...
3.9

100+ bought

€ 35

HITOP 200W Aquarium PTC Heater with Controller Digital Heater for Fish Tank and Turtle Tank 25-60Gallon, Sturdy Heater with Removable Protective Cover
US Магазин
HITOP

HITOP 200W Aquarium PTC Heater with Controller Digital Heater for Fish Tank and ...
4.3

100+ bought

€ 33

SunGrow Water Heater, 10W, Turtle Aquarum Tank, Cat & Dog Heated Bowl, Warm Water Encourage Drinking, Bird Fountain Deicer, Chicken & Horse Water Dispenser Warmer, Quail Waterer Storage Bucket
US Магазин
SunGrow

SunGrow Water Heater, 10W, Turtle Aquarum Tank, Cat & Dog Heated Bowl, Warm Water ...
4.2

50+ bought

€ 17

10% ИЗКЛ
NICREW 50W Aquarium Heater with Temp Controller for 5-10 Gallon Tanks | Dual Temp Sensors, Accurate Heat Control, Overheat Protection, Durable Quartz Glass, Freshwater & Saltwater Compatible
US Магазин
NICREW

NICREW 50W Aquarium Heater with Temp Controller for 5-10 Gallon Tanks | Dual Temp ...
4.6

50+ bought

€ 28 31

3% ИЗКЛ
50W Mini Aquarium Heater, Digital Fish Tank Heater | 5-10 Gal, External Controller, Explosion-Proof, Dry-Run Protection, Betta & Turtle
US Магазин
UPETTOOLS

50W Mini Aquarium Heater, Digital Fish Tank Heater | 5-10 Gal, External Controller, ...
4.1

50+ bought

€ 33 34

Pawfly 20 W Mini Submersible Aquarium Heater, 1.5-3 Gallon Fish Tanks Heater Betta Heater with Thermostat, Submersible Fishs Tank Heater, Small Aquarium Heaters for Saltwater and Freshwater
US Магазин
Pawfly

Pawfly 20 W Mini Submersible Aquarium Heater, 1.5-3 Gallon Fish Tanks Heater Betta ...
4

50+ bought

€ 14

Aquarium Chiller 79 Gal 300L, 1/3 HP Water Chiller for Cold Plunge | Hydroponic Cooler Fish Tank Cooling System for Axolotl Coral Reef Shrimp with Pump and Pipe
US Магазин
Ezcasch

Aquarium Chiller 79 Gal 300L, 1/3 HP Water Chiller for Cold Plunge | Hydroponic ...
4.2

50+ bought

€ 342

9% ИЗКЛ
AquaMiracle Submersible Aquarium Heater, 100W Fish Tank Heaters with LED Digital Temp Display, Dry-Run Auto Power-Off & Overheat Protection, for Freshwater and Saltwater Tanks 10-20 Gal
US Магазин
AquaMiracle

AquaMiracle Submersible Aquarium Heater, 100W Fish Tank Heaters with LED Digital ...
4.5

50+ bought

€ 29 32

39% ИЗКЛ
Tetra Submersible Heater With Electronic Thermostat, 200-Watt
US Магазин
Tetra

Tetra Submersible Heater With Electronic Thermostat, 200-Watt
4.4

50+ bought

€ 22 36

FEDOUR 10W Super Mini USB Aquarium Heater, Small Adjustable Heater with External Controller for up to 2.5 Gallon Small Fish Tank, Nano Fish Tank Heater, Betta Heater for Fish Bowls
US Магазин
FEDOUR

FEDOUR 10W Super Mini USB Aquarium Heater, Small Adjustable Heater with External ...
3.9

50+ bought

€ 16

FREESEA Aquarium Heater for Fish Tank 25W Small Submersible Thermostat with Off-Water Protection & UL Certified Cord for 1-5 Gallon Fish Turtle Tanks Enthusiasts
US Магазин
FREESEA

FREESEA Aquarium Heater for Fish Tank 25W Small Submersible Thermostat with ...
4.2

50+ bought

€ 24

Eheim AEH3617090 200-watt Jager Heater for Aquarium, 16-Inch
US Магазин
Eheim

Eheim AEH3617090 200-watt Jager Heater for Aquarium, 16-Inch
4.5

50+ bought

€ 50

HiTauing Aquarium Heater 25W/50W/100W/200W/300W, Adjustable Knob Fish Tank Heater with Digital Thermometer, Submersible Betta/Turtle Tank Heater for Freshwater and Saltwater Tanks
US Магазин
HiTauing

HiTauing Aquarium Heater 25W/50W/100W/200W/300W, Adjustable Knob Fish Tank Heater ...
4.1

50+ bought

€ 19

Aqueon Submersible Aquatic Flat Heater 15 Watts
US Магазин
Aqueon

Aqueon Submersible Aquatic Flat Heater 15 Watts
4.1

50+ bought

€ 25

DaToo Aquarium Chiller Fish Tank Fan Aquarium Cooling Fan,
US Магазин
DaToo

DaToo Aquarium Chiller Fish Tank Fan Aquarium Cooling Fan,
4.1

50+ bought

€ 25

5% ИЗКЛ
Aqueon Aquarium Fish Tank Preset Heater For Up To 75 Gallons, 200 Watts
US Магазин
Aqueon

Aqueon Aquarium Fish Tank Preset Heater For Up To 75 Gallons, 200 Watts
4.3

50+ bought

€ 36 38

Aquarium Heater 300W Upgraded Fish Tank Heater With Leaving Water Automatically Stop Heating And Advanced Temperature Control System, Suitable For Saltwater And Freshwater 20 Gallons to 60 Gallons
US Магазин
AIWEK

Aquarium Heater 300W Upgraded Fish Tank Heater With Leaving Water Automatically ...
4.3

50+ bought

€ 27

AquaMiracle Aquarium Heater 25W Fish Tank Heater for 3-5 Gal Tanks, LED Digital Display Thermostat Turtle Heater with Out-of-Water Auto Shut-Off, Overheat Protection & Memory Function
US Магазин
AquaMiracle

AquaMiracle Aquarium Heater 25W Fish Tank Heater for 3-5 Gal Tanks, LED Digital ...
4.3

50+ bought

€ 25

50W Compact Aquarium Heater for 5-10 Gallon Tanks | Super Short Submersible Fish Tank Heater with LED Digital Thermostat, Dry-Run & Overheat Protection, Memory Function
US Магазин
VCRAZE

50W Compact Aquarium Heater for 5-10 Gallon Tanks | Super Short Submersible Fish ...
4.4

50+ bought

€ 26

hygger Ceramic Submersible Aquarium Heater, New Explosion-Proof Fish Tank Water Heater with External Temp Controller Auto Thermostat Heater for Saltwater Freshwater 100W for 520 Gallon
US Магазин
hygger

hygger Ceramic Submersible Aquarium Heater, New Explosion-Proof Fish Tank Water ...
4.9

50+ bought

€ 32

Zoo Med TURTLETHERM Automatic Preset Aquatic Turtle Heater Up to 50 Gallons 150 Watt
US Магазин
Zoo Med

Zoo Med TURTLETHERM Automatic Preset Aquatic Turtle Heater Up to 50 Gallons 150 Watt
4.2

50+ bought

€ 41

Inkbird Temperature Controller Electronic Heating Thermostat Aquarium Probe | Heater Relay Digital Greenhouse Temperature Controller Dual Stage Timer Time Switch ONLY Heat Plug Outlet NO Cooling
US Магазин
Inkbird

Inkbird Temperature Controller Electronic Heating Thermostat Aquarium Probe | ...
4.5

50+ bought

€ 43

Aquarium Chiller 42 Gal, 1/10 HP Water Chiller Machine, Hydroponic Cooling System, Fish Tank Chiller with Upgraded LED display, for Axolotl Jellyfish
US Магазин
Dreamtrue

Aquarium Chiller 42 Gal, 1/10 HP Water Chiller Machine, Hydroponic Cooling System, ...
4

50+ bought

€ 286

AHJ 500W Aquarium Heater for 75-120 Gallon Fish Tanks, Submersible Heater | Accurate Temperature Control, Overheat Protection, Auto Shut-Off, Fast Heating for Freshwater and Saltwater Aquariums
US Магазин
AHJ

AHJ 500W Aquarium Heater for 75-120 Gallon Fish Tanks, Submersible Heater | ...
4

50+ bought

€ 34

Eheim 3619090 Jager Aquarium Thermostat Heater 300W, Black
US Магазин
Eheim

Eheim 3619090 Jager Aquarium Thermostat Heater 300W, Black
4.4

50+ bought

€ 58

500W Aquarium Heater for 70-120 Gallon with Auto Shut-Off When Leaving WaterSubmersible Fish Tank Heater, Dry-Burn & Overheat Protection, Explosion-Proof, Freshwater Saltwater Large Tank
US Магазин
HANLESHUKA

500W Aquarium Heater for 70-120 Gallon with Auto Shut-Off When Leaving ...
4.4

50+ bought

€ 34

6% ИЗКЛ
200W Submersible Fish Tank Heater for 20-40 Gallon with Auto Shut-Off When Leaving WaterAquarium Heater, Dry-Burn & Overheat Protection, Smart LED Display for Freshwater Saltwater Turtle
US Магазин
HANLESHUKA

200W Submersible Fish Tank Heater for 20-40 Gallon with Auto Shut-Off When Leaving ...
4.5

50+ bought

€ 32 34

Purchase Reliable Aquarium Heaters and Coolers Online from Ubuy Bulgaria

Some aquariums are decorative. Others are ecosystems under stress the moment the room temperature drops or the sun hits the glass too long. Without thermal control, the environment shifts from stable to hostile in hours. In freshwater and marine tanks alike, temperature regulation doesn’t just improve comfort; it keeps species alive.

Whether you’re raising neon tetras in a planted tank or managing heat spikes in a reef setup, the aquarium heater and cooler you use determine the health, behaviour, and survival of everything inside. Ubuy Bulgaria offers solutions built to stabilise thermal variance, not just react to it. Every product is designed for aquatic balance, not aesthetics, from digital controllers to high-wattage heaters and compact chillers.

Choose the Right Thermal Setup for Your Aquarium

The right equipment depends on tank size, species, climate, and layout. Below are the main types of heating and cooling systems used in real-world aquariums, each with a defined role in water stability and species health.

Full-Submersion Heaters for Consistent Tropical Heat

These go entirely underwater, either mounted vertically or horizontally. Most models, like the Fluval E-Series, feature an adjustable dial and digital thermometer. Submersibles are favoured for their even heat distribution and compatibility with freshwater and marine tanks.

Choose the wattage based on your volume: 25 W for 5–10 litres and 300 W for 100+ litres. They work well in conjunction with aquarium water treatments that depend on stable biological activity.

External In-Line Heaters for Clean, Minimal Interiors

Connected to the outflow of a canister filter, these heaters warm water before it re-enters the tank. They’re ideal for aquascaped tanks where visual clutter matters. Brands like Hydor and Finnex make models with precise calibration, often to 0.1°C. Because they’re outside the tank, they’re safe from substrate disturbance or aggressive fish.

External heaters maintain temperature in reef tanks using multiple aquarium lights without crowding the sump or display area.

Compact Preset Heaters for Small Tanks or Quarantine Use

For tanks under 10 gallons of betta bowls, shrimp tanks, and fry grow-outs, compact heaters with fixed temps (usually 25°C) do the job. Models from Aqueon and Tetra offer plug-and-play setups with auto shutoff. These pair well with fish medication & health supplies, where temperature stability is key to treatment.

Titanium Heaters with Controllers for High-Value Systems

Titanium-core heaters resist corrosion and breakage. They’re often used with external controllers that monitor temperature independently. Brands like Inkbird combine dual-sensor probes with alarms and mobile alerts. These are common in setups where failure means loss: marine tanks, discus systems, and breeding operations.

The controller can toggle heating and cooling systems, which are ideal for seasonal climates. When paired with a fish food auto-feeder, it reduces manual intervention.

Clip-On Coolers for Surface Heat Management

Evaporative fans clip onto the tank’s rim and blow across the surface to reduce temperature. They don’t cool like a chiller but work in smaller setups or open-top aquariums. These are useful in shallow tanks exposed to direct light or setups with high-wattage aquarium lights. The water loss from evaporation needs topping up with conditioned water to maintain parameters.

Compressor-Based Chillers for Marine and Reef Tanks

These machines extract heat from the water using refrigerant coils and are essential when ambient temperatures threaten coral health. Chillers like the JBJ Arctica can handle tanks from 100–500 litres, dropping temperatures by up to 10°C, depending on the model.

Often used with saltwater setups that include sensitive invertebrates or temperature-sensitive fish, medication & health supplies.

Heater Guards and Turtle Tank-Specific Models

Turtles bite. They also knock into things. Standard glass heaters don’t hold up well in turtle setups. Use models with integrated guards or opt for heaters explicitly made for amphibious tanks. These come with casing, higher wattage for shallow water, and compatibility with basking setups.

Brands like Eheim and Fluval offer models rated for 20–100 litres of partially filled water. Always paired with a strong thermometer, many users install a secondary aquarium heater controller to cut power if temperatures spike.

Dual-Mode Temperature Controllers for Precision Automation

A standalone controller links to your heater or chiller and monitors water independently. Some models, like the Inkbird ITC series, have dual relay outputs to control heating and cooling precisely. They’re ideal for setups using a heater in winter and a cooler in summer. These are also used in amphibious tanks or when dosing aquarium water treatments that require narrow temperature ranges.

Get the Best Deals on Aquarium Heaters and Coolers from Top Rated Brands

Below, we have further categorised top models from brands based on their key features, use cases, and user ratings for your convenience.

Brand

Model/Product Name

Key Features

Best Use Case

Notable Technical Detail

User Rating

Fluval

E300 Advanced Heater

Shatterproof, LCD, ±0.5°C control

Tropical tanks

Fully submersible

⭐⭐⭐⭐

Eheim

Jager TruTemp 200W

Adjustable, auto shutoff

Mid-size community tanks

German-made, recalibration

⭐⭐⭐⭐⭐

Hygger

Titanium Heater 500W

External controller, dual sensor

Saltwater & large tanks

Titanium, 100–300L coverage

⭐⭐⭐⭐

JBJ

Arctica Chiller DBM-250

Compressor cooling, 1/3 HP

Reef setups, hot climates

Drop of up to 10°C

⭐⭐⭐⭐

Inkbird

ITC-308 WiFi Controller

Dual relay, app alerts

Heater + cooler control

Works with 1200W devices

⭐⭐⭐⭐⭐

Aqueon

Preset Heater 50W

Non-adjustable, compact

Betta & shrimp tanks

Maintains 25°C

⭐⭐⭐⭐

Across the range available across Ubuy Bulgaria, digital heater systems and controllers are becoming standard even in beginner tanks. What stands out: users consistently favour temperature precision over brand loyalty. That means whether you're dosing medicine or adjusting for heatwaves, your equipment, not your heater’s logo, makes the difference.

Frequently Asked Questions About Aquarium Pumps and Filters

  • Where Should I Place the Aquarium Heater?

    Mount it near the filter outlet or circulation pump. That placement spreads warm water quickly. Keep it submerged and away from gravel or decorations to prevent heat traps. Use vertical or horizontal positioning based on your tank layout.

  • Can I Use a Heater in a Turtle Tank?

    Yes, but only with a guard or protective casing. Turtles can crack exposed glass. Choose turtle-specific heaters or add guards over submersible models. Always ensure the wattage covers your shallow water volume.

  • How Do I Know if My Aquarium Heater is Working?

    Look for the indicator light—Cross-check with a separate thermometer, not just the one built into the heater. If the temp doesn’t stabilise within 24 hours, inspect the unit or use a digital controller for verification.

  • Are Battery-Operated Aquarium Heaters Effective?

    Not for long-term use. They’re emergency devices at best. Instead, use a UPS backup system or controller with fail-safe cutoffs. Battery heaters can’t reliably handle large volumes or high wattage.

  • Where Can I Buy an Aquarium Heater and Cooler Online in Bulgaria?

    Ubuy Bulgaria stocks heaters, chillers, and controller systems from Fluval, Eheim, Hygger, and more. You’ll also find [Fish Food], [Aquarium Water Treatments], and [Fish Medication & Health Supplies] to build a complete thermal and biological system.