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.

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

€10,30

Crystal Carb is a selected activated carbon specifically for freshwater aquariums. Its incredible active surface area of 1300 m2/g enables it to adsorb up to 24g of methylene blue per 100g of car...

€18,90

Carbon source as food for bacteria, for the removal of NO3 and PO4 Ultra Carbon stimulates the reproduction of certain bacterial species to simultaneously and naturally reduce PO4 and NO3 values. T...

from €10,80

Synthetic resin for the removal of large quantities of phosphates and silicates in aquariums Oceanlife Phos Remover is a new generation nanoporous resin capable of removing large quantities of phos...