This colour stops some of the sun's rays penetrating deep into the water, helping to control aquatic weed and algae.
- Safe For Fish, Pets & Family
- Helps prevent algae and weed growth
- Blue mirror like finish
- Use all year
- No herbicides or pesticides
Each 200g pack will treat up to 2 million litres of water.
As a rule of thumb, a tennis court size pond, 1m average depth will hold around 500,000 litres of water.
The actual colour you will achieve depends on your pond water conditions