Why does this happen and how do I prevent it?
Since ponds are an open environment you may find that pollutants enter the water which will effect water quality and can have an impact on the health of the pond. A pollutant is any foreign chemical which would not naturally occur in the pond environment.
Some common sources of pollutants are:
- Heavy rain which is likely to raise the acidity of the water
- Concrete, new ponds or ponds near patios etc. can be polluted by leaching lime from concrete
- Garden chemicals like pesticides
- Other wildlife
- Detergents used outside
If you fear that your pond has been polluted it is important to test the water to highlight changes in pH and treat accordingly.
For ponds with fish, you can support your fish in times of bad water quality with Stress Away and Pond Guardian Pond Salt to prevent disease outbreaks.
Water changes will help to dilute pollutants in extreme cases and help to increase oxygen levels for fish and plants which can be depleted by pond pollution.
What treatment should I use?
Use with any of the above