The green color in your pond liner is likely due to algae growth. Algae are simple plant-like organisms that thrive in light and water, and they can quickly multiply to form a thick, green mat over the surface of the pond liner. Algae growth can be unsightly, blocking the view of the fish in the pond and creating an unpleasant odour.
Here are a few things that can cause green algae growth in the pond:
-Sunlight: When algae are exposed to sunlight, they undergo a process called photosynthesis, which allows them to convert light into food. The more sunlight the pond liner is exposed to, the faster the algae can grow.
-Warm weather: Algae also thrive in warm weather. The ideal temperature for algae growth is between 70 and 90 degrees Fahrenheit.
-Nutrients in the water: Algae also need nutrients in order to grow, and they can readily obtain these nutrients from the fish food and water in the pond.
-Poor circulation: Poor circulation can lead to stagnant water, which creates a perfect environment for algae growth.
To control the growth of green algae in the pond liner, you can take the following steps:
1. Reduce sunlight: Shade the pond liner with plants, trees and or patio covers.
2. Cool the water: Install an aeration system or fountain in the pond to keep the water cool and in circulation.
3. Reduce nutrients in the water: Use a skimmer to remove debris and leftover fish food from the water.
4. Improve circulation: Install a circulating pump in the pond or improve its filter system.
5. Use algaecide: Apply an algaecide to the pond water, following the instructions on the product label.
If you are unable to control the growth of green algae with the above steps, you may need to drain the pond and clean the liner.