What Causes Pond Algae?
Unfortunately, pond algae or green water needs very little to thrive in your pond. Sun, nutrients and the lack of movement in the water provide the perfect growing conditions for algae. These algae are small single cell algae that multiple quickly and soon give your pond that “pea soup” look.
The algae that causes green water is almost microscopic and as a result can’t be filtered out of your pond.
When to Treat Pond Algae?
Most people believe pond algae grows in the summer as this is the time it becomes obviously present in your pond. However, the growth of the algae starts in spring. Fish start to become more active and start producing more waste as the temperature picks up. Although the sun is not very hot, the daylight hours have increased and are providing the algae with the perfect growing conditions.
Ideally, you should be treating your pond throughout the year the keep algae at bay. If you have missed the winter, make sure you start treating or preventing algae in Spring.
Can Pond Algae Kill Fish?
Although green water can look dangerous it is unlikely to harm your fish. Green water is caused by small, single cell algae that multiply and eventually cause a green tint to your water. Unlike blanket weed that is very dense, the algae cells that cause green water are so small that they can pass through your finest filter. They pose very little threat to your fish with regards to trapping them or health wise.
Whilst the algae cells may not be dangerous to your fish, the fact that you have green water suggests you have an imbalance in your pond which can be very dangerous to your fish. Use Pond Equaliser to stabilise your water parameters and then treat your green water with Pond Klear or Pond Klear Xtra depending on the size and condition of your pond.