Freshwater Filter Media | Hobby pesca e acquari

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Freshwater Filter Media

39 products

Freshwater aquarium filter media keep the water clear and stable: mechanical (sponges, floss), biological (ceramic rings, sintered glass), and chemical (carbon, resins, zeolite, peat) filtration to manage particulates, nitrogen, and unwanted substances.

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How to choose them: always combine mechanical + biological; add chemical only when needed (yellow water, high phosphates, medications, tannins).

Recommended flow order: coarse (sponge 10–20 ppi) → fine (sponge 30–45 ppi/floss) → biological (ceramic rings, sintered glass spheres) → chemical (carbon, resins, zeolite/peat) towards the outlet.

Typical use: sponges/floss catch debris; biological media host bacteria (NH3→NO2→NO3); carbon absorbs colors/odors (also post-treatment); resins target PO4/NO3; zeolite helps with ammonia at startup; peat softens/acidifies and releases natural tannins.

Maintenance: rinse sponges and pre-filter in aquarium water; do not wash biological media under the tap; replace floss when saturated; carbon/resins should be replaced/regenerated when due.

Cautions: carbon can absorb fertilizers; peat lowers KH/pH; zeolite should not be used long-term in heavily planted tanks unless necessary. An external pre-filter reduces main filter cleaning.

Tip: set up an easy-to-rinse pre-filter and always maintain a large volume of biological media; add chemical media only when needed and remove it after the objective.

— Advice from the Hobby Pesca & Acquari Team

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Sera Filter Media Bag - Sizes 1 and 2 Sera Filter Media Bag - Sizes 1 and 2
from €4,90
from €4,90
Sera filter media bags make introducing and removing filter media much faster and tidier. The media don't mix, and cleaning becomes simpler. Available in 2 sizes, optimal for all Sera filter media....
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Sera Biofibres Coarse 40g - Filter Material for Mechanical Pre-filtering
€3,90
€3,90
Sera Biofibres Grosse are filter fibres for the biomechanical pre-filtration of coarse dirt particles. They protect subsequent filter media from coarse dirt, increasing the biological effectiveness...
sera crystal clear Professional sera crystal clear Professional
€7,40
€7,40
High-performance filter material for mechanical filtration with patented 3D structured fiber. sera crystal clear Professional quickly removes clouding particles larger than 10 µm, such as algae or ...
JUWEL CIRAX Biological Ceramic Rings JUWEL CIRAX Biological Ceramic Rings
from €6,70
from €6,70
High-performance ceramic filter media for Juwel internal filters, ensuring optimal biological filtration thanks to their large porous surface. Juwel's CIRAX provides the ideal support for the colon...
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JUWEL PHORAX Phosphate Reducer JUWEL PHORAX Phosphate Reducer
from €6,90
from €6,90
Specialized filter material for reducing phosphates in the aquarium, effectively preventing algae growth. Juwel's PHORAX removes phosphates from the water, eliminating one of the main nutrients tha...
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JUWEL CARBAX Compact Activated Carbon JUWEL CARBAX Compact Activated Carbon
from €11,50
from €11,50
High-performance compact activated carbon for Juwel internal filters, effectively removes harmful substances, odours and discolouration from aquarium water. CARBAX ensures crystal-clear and healthy...
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JUWEL AMORAX Ammonia Reducer JUWEL AMORAX Ammonia Reducer
from €6,90
from €6,90
Specialized filter media for ammonia reduction in aquariums, ensuring a safe environment for your fish. Juwel's AMORAX effectively absorbs toxic ammonia from the water, protecting fish from stress ...
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JUWEL BIOPLUS FINE Fine Filter Sponge JUWEL BIOPLUS FINE Fine Filter Sponge
from €3,20
from €3,20
Fine-pored filter sponge for Juwel internal filters, ensuring accurate mechanical filtration and optimal bacterial colonization. The BIOPLUS FINE captures the finest dirt particles and provides a l...
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JUWEL BIOPLUS COARSE Coarse Filter Sponge JUWEL BIOPLUS COARSE Coarse Filter Sponge
from €3,20
from €3,20
Coarse filter sponge for Juwel internal filters, ensures effective mechanical filtration and optimal bacterial colonization. The BIOPLUS COARSE captures larger dirt particles and provides a large s...
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JUWEL NITRAX Nitrate Remover JUWEL NITRAX Nitrate Remover
from €4,70
from €4,70
Specialized filter material for biological nitrate reduction in aquariums, ensuring a healthy and safe environment for your fish. Juwel's NITRAX effectively reduces nitrate levels thanks to its spe...
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JUWEL BIOCARB Activated Filter Carbon JUWEL BIOCARB Activated Filter Carbon
from €3,40
from €3,40
High-quality activated carbon for Juwel internal filters, effectively removes harmful substances, odors, and discolorations from aquarium water. BIOCARB ensures crystal-clear and healthy water than...
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JUWEL BIOPAD Filter Wool JUWEL BIOPAD Filter Wool
from €1,50
from €1,50
High-quality filter floss for Juwel internal filters, ensuring fine mechanical filtration and crystal-clear water quality. The BIOPAD captures the finest dirt particles, keeping your aquarium water...
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11% Off
Askoll Replacement Sponge Pratiko 400 Filter
€8,00
€8,00
€9,00
Replacement sponge compatible with Askoll Pratiko 400 external filters.Compatibility Pratiko old model filter Pratiko New Generation filter Pratiko 3.0 Super Silent filter
Askoll Replacement Carbon Cartridge Filter Biovita 250/252
€6,30
€6,30
Replacement activated carbon cartridge for Askoll Biovita filter model 250/252.
Askoll Aqua Ranger 2 Replacement Sponges (2 Pieces)
€3,30
€3,30
Replacement filter sponges for Askoll Aqua Ranger 2/Pure in M. Pack of 2.
Askoll White Sponge Biovita Filter Replacement New Model
€3,90
€3,90
Replacement white sponge for new model Askoll Biovita filter.
Askoll Aqua Ranger 1 Replacement Sponge
€3,10
€3,10
Replacement sponge for Askoll Aqua Ranger 1 and Pure S filter - 2 pieces
13% Off
Askoll Activated Carbon Cartridge Replacement for Biovita SuperPower Filter
€3,30
€3,30
€3,80
Replacement activated carbon cartridge for Askoll Biovita SuperPower filter.FeaturesActivated carbon filter cartridge for chemical water filtration. Removes odors, coloring substances and other und...