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Aquarium filters – the key to a crystal clear and balanced aquatic environment

Aquarium filters play a fundamental role in maintaining the ecological balance. They remove contaminants, regulate toxic compounds (such as ammonia and nitrites), and provide stable living conditions for fish. The right filter improves oxygen circulation, prevents water clouding, and reduces the need for frequent replacement.

Types of aquarium filters

Internal filters

  • Compact and easy to install
  • Suitable for small and medium-sized aquariums
  • Provide mechanical and biological filtration

Some models offer flow rate adjustment, a locking system and the possibility of accessories

External filters - canisters

  • Ideal for large aquariums with many inhabitants
  • Powerful and located outside the aquarium
  • Offer multi-layer filtration (mechanical, biological, chemical)
  • Provide quiet and effective operation under high load

Filter sponges

  • Operate via an air pump
  • Primarily for biological filtration
  • Excellent choice for breeding aquariums and shrimp tanks
  • Soft and safe for small or sensitive fish

Sump systems

  • Extremely effective for large or specialized aquariums
  • Have a large volume and various compartments for filtration materials
  • Allow for easy maintenance and customization

How to choose the right filter for your aquarium?

The choice of filter depends on several key factors:

  1. Aquarium volume – each filter is sized for specific liters
  2. Fish population and species – more fish = higher load
  3. Aquarium type – freshwater, marine, plant or bred
  4. Pollution level – from food, plants, waste

Tip: The combination of mechanical, biological and chemical filtration gives the best results and a stable ecosystem.

Why choose filters from us?

  • A wide variety of internal and external aquarium filters
  • Models with high performance, long-lasting operation and warranty
  • Detailed descriptions with recommendations for volume, inhabitants and functionalities
  • Professional advice and support when choosing

Browse our selection of aquarium filters and choose the most suitable solution for a clean, healthy and beautiful underwater ecosystem!

Supplement your filtration with essential accessories


Aquarium lighting – for healthy plant growth and a beautifully lit environment
Aquarium heaters – provide the ideal temperature for tropical inhabitants
Water tests and preparations – monitor water parameters and prevent problems in time

Glass Ceramic Bio Ring M - 5l ceramic cylinders. The cylindrical shape of the bio rings makes them the optimal filter material especially for bio filters (sump type) and large filters (canister type).Due to the particularly large surface area for bacterial colonization (approximately 10 times higher..
60.00 лв.
Glass Ceramic Bio Ring S - 5l  is the most efficient biological filter material available, due to its enormous surface area in relation to its volume. This property is obtained by heating the glass to temperatures at which it approaches a gaseous state and then rapidly cooling it. Just like a c..
72.00 лв.
High Quality Zeolite - high quality, natural zeolite suitable for the chemical filtration section of aquarium filters.Zeolites are used for many technical purposes, especially because their ability to absorb and release ions can be useful. Basically, they act as molecular sieves that can separate un..
28.00 лв.
Super Bio Breathing Balls filter ceramics, suitable for larger aquarium filters - canisters or sump filters. Guarantees rapid biodegradation of toxic ammonia/ammonia and nitrite. An anaerobic nitrate-degrading bacterial culture will be created inside the spheres over time, which will significantly ..
20.00 лв.
Super Bio Breathing Balls filter media are used by professional discus breeders because they provide the most efficient breakdown of ammonia and nitrite in the smallest possible space.Super Bio Breathing Balls can be used in a separate basket of an external filter placed after mechanical filtration..
90.00 лв.
Super Bio Breathing Pearls - porous filter media with 1500M2 of filter surface per 1L.Baked glass-ceramic is the most highly efficient biological filter material available, due to its enormous surface area in relation to volume. This property is obtained by heating the glass to temperatures at whic..
50.00 лв.
Super Bio Breathing Pearls - 1L according to the manufacturer provides 1500m2 of filter surface.It is 10-12 times larger surface area than conventional filter materials and thus Super Bio Breathing Pearls has a much better ability to accommodate the nitrobacter group. These are the bacteria that br..
190.00 лв.
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