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Colombo BiOx cleanses your pond with active oxygen to help remove sludge naturally. When BiOx comes into contact with water, it immediately releases active oxygen which is an important factor in the pond environment.


Bacteria within the pond filter use oxygen during the degradation of waste, and an improved oxygen level will enhance the biological performance of your filtration system. Higher oxygen levels also allow your fish to extract the oxygen they need more easily from the water.


Due to the natural oxidation power of Colombo BiOx, biological waste and sludge are broken down. Through regular weekly use of BiOx your pond stays clean and blanket weed growth is severely reduced.


  • Adds extra oxygen to the pond
  • Cleans pond with activated oxygen
  • Decompose sludge
  • Helps prevent algae
  • Safe for fish and plants


Colombo BiOx is available in the following sizes:
- Colombo BiOx 1Ltr - Treats 32,000 Litres
- Colombo BiOx 2.5Ltr - Treats 80,000 Litres
- Colombo BiOx 5Ltr - Treats 160,000 Litres


Weekly, 1 measuring spoon (=15 ml) per 500 litres of pond water. 2,500ml Colombo BiOx is sufficient for treating 16,000 litres of pond water for 5 weeks.


Never pour directly onto plants.


For a healthy pond and thus healthy fish, good water quality is essential. Therefore, test water quality at least once a month and correct it if necessary. The KH-value is especially important as it should be between 6 and 8° DH, prior to treatment.

Colombo BiOx

PriceFrom £15.63
  • Collection from our premises near Chepstow in South Wales by appointment or delivery to British mainland addresses.


    Delivery is £8.95 per order for most dry goods, with some more expensive delivery charges applicable for very heavy or long items.


    Please note delivery for dry goods is typically 2-5 working days and items may be sent in separate packages.

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