Gel bacteria balls that contain millions of beneficial freshwater bacteria to help seed aquarium/pond filter media. The gel balls dissolve slowly in the filtration system and keep the water clear and healthy, which provides a stable environment for aquatic life.


A minimum of one ball should be added per 25 litres of aquarium water, to a normally stocked tank/pond, highly stocked systems will require more.


The balls can be replaced once they have fully dissolved, ideally during regular filter maintenance.


Gel Filter Starter Bacteria Balls (100+)

  • Coronavirus (COVID-19) update

    Fish Tank Matt continues to process orders and send out items within two business days of an order being placed (as stated below).

    Postal services are currently operating as normally as they possibly can, however delays may occur during this time.

    All items will be sent out within two business days of the placed order and the majority via Royal Mail 2nd Class Signed For.

    Whenever possible packaging is reused to try and reduce the amount of cardboard waste produced and to operate a more sustainable process.