
Colombo KH Plus Pond Carbonate Hardness Booster | Stabilises pH & Water Quality
Colombo KH Plus is a fast-acting treatment that increases carbonate hardness (KH) in pond water, helping to stabilise pH levels. Maintaining the correct KH is essential for a healthy pond, as low levels can lead to sudden pH fluctuations that may harm fish and plants.
Key Features:
- Increases carbonate hardness (KH) levels
- Helps stabilise and maintain consistent pH
- Supports a healthier environment for fish and plants
- 100% natural pond treatment
- Fast-acting and easy to apply
- Available in multiple sizes to suit different pond volumes
By restoring KH to the recommended range of 6–8°DH, Colombo KH Plus helps prevent unstable water conditions. Regular monitoring and adjustment can reduce stress on aquatic life and improve overall pond balance.
Dosage:
- 15 ml per 200 litres raises KH by 2°DH
- Dilute in lukewarm water before adding to the pond
- Do not pour directly onto plants
- Test water monthly and adjust as needed
Available Sizes:
- 1L – treats up to 7,000 litres
- 2.5L – treats up to 17,500 litres
- 5L – treats up to 35,000 litres
For ongoing stability once the desired KH level is reached, consider maintaining water balance with Colombo Balantex.
Colombo KH Plus is a fast-acting treatment that increases carbonate hardness (KH) in pond water, helping to stabilise pH levels. Maintaining the correct KH is essential for a healthy pond, as low levels can lead to sudden pH fluctuations that may harm fish and plants.
Key Features:
- Increases carbonate hardness (KH) levels
- Helps stabilise and maintain consistent pH
- Supports a healthier environment for fish and plants
- 100% natural pond treatment
- Fast-acting and easy to apply
- Available in multiple sizes to suit different pond volumes
By restoring KH to the recommended range of 6–8°DH, Colombo KH Plus helps prevent unstable water conditions. Regular monitoring and adjustment can reduce stress on aquatic life and improve overall pond balance.
Dosage:
- 15 ml per 200 litres raises KH by 2°DH
- Dilute in lukewarm water before adding to the pond
- Do not pour directly onto plants
- Test water monthly and adjust as needed
Available Sizes:
- 1L – treats up to 7,000 litres
- 2.5L – treats up to 17,500 litres
- 5L – treats up to 35,000 litres
For ongoing stability once the desired KH level is reached, consider maintaining water balance with Colombo Balantex.
Description
Colombo KH Plus is a fast-acting treatment that increases carbonate hardness (KH) in pond water, helping to stabilise pH levels. Maintaining the correct KH is essential for a healthy pond, as low levels can lead to sudden pH fluctuations that may harm fish and plants.
Key Features:
- Increases carbonate hardness (KH) levels
- Helps stabilise and maintain consistent pH
- Supports a healthier environment for fish and plants
- 100% natural pond treatment
- Fast-acting and easy to apply
- Available in multiple sizes to suit different pond volumes
By restoring KH to the recommended range of 6–8°DH, Colombo KH Plus helps prevent unstable water conditions. Regular monitoring and adjustment can reduce stress on aquatic life and improve overall pond balance.
Dosage:
- 15 ml per 200 litres raises KH by 2°DH
- Dilute in lukewarm water before adding to the pond
- Do not pour directly onto plants
- Test water monthly and adjust as needed
Available Sizes:
- 1L – treats up to 7,000 litres
- 2.5L – treats up to 17,500 litres
- 5L – treats up to 35,000 litres
For ongoing stability once the desired KH level is reached, consider maintaining water balance with Colombo Balantex.

















