Pond Biological Filter Media

Biological filter material encourages growth of beneficial bacteria breaking down toxic ammonia & nitrites into nitrates. Biological filter material comes in the form of bio-balls or bio-spheres. These balls then become a host for colonizing biological bacteria to grow and multiply. Liquid biological starters are ideal for quickly boosting the nitrogen cycle, especially after increasing the number of live fish which have been added to the pond, before the filter system can catch up on its own with bacteria growth.

Bio-Balls

Bio-Balls

Best Bio media
Pros: Best biological media available the mini size makes for more contact time and creating oxygen rich water as well as tons of biological to support fish.
Cons: Pricey
I have over this product on each one of my systems with my largest being 600gallons. I highly recommend it.
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