Bio-Balls (small) 30 pieces for internal filters

Mini Bio-Balls Ø 2 cm – Ideal for multi-chamber internal filters & modular systems

Maximize the biological self-cleaning of your aquarium! Our 2 cm Mini Bio-Balls are the perfect choice for aquarists who want to unlock the full potential of their multi-chamber internal filters . Their compact design bridges the gap between standard media that are too large and substrate that is too fine.

The specialists for large-volume internal filters

These bio-balls have been specifically developed for filter systems that have separate chambers or generous media baskets:

• Perfect for modular filters: Ideal for internal filters with expandable chambers (e.g., Eheim Biopower/Aquaball or JBL CristalProfi i-Series). They completely fill the modules and ensure maximum bacterial colonization.
• Optimized for multi-chamber systems: In filters with separate areas for mechanical and biological cleaning, these balls unfold their full effect by creating a permanent, oxygen-rich zone for filter bacteria.
• Maximum service life: Thanks to the open structure of the 20 mm balls, the water flow remains consistently high even in large chambers. Sludge buildup, which often occurs with overly fine media in internal filters, is effectively prevented.
• Robust & Durable: The high-quality material is virtually indestructible and, unlike porous ceramic media, does not need to be replaced, but only briefly rinsed when necessary.

• feature	Details
  diameter	20 mm (compact size)
  Filter type	Multi-chamber internal filters, modular filters, bio-boxes
  material	Water-neutral, pollutant-free plastic
  Effect	Biological degradation of pollutants (NH3/NO2)

• Usage note:

  These mini bio-balls are ideal for all internal filters with removable filter chambers . They are the perfect biological complement to filter sponges. Simply place the bio-balls in one of the rear or middle chambers to ensure the colonization of beneficial nitrifying bacteria across the large surface area.

Manufacturer: Pet Nation