The best way to get rid of the algae in your pond depends on your budget, your willingness to change the pond’s design, and your interest in natural products. Barley straw is an effective natural way to control algae, but it works best when used with changes to the water conditions. It also takes a few weeks to a few months to make noticeable differences in algae levels. For a faster change, try a chemical algaecide product. Many are safe for fish and plants despite being mixed in a lab. When compared to vinegar or baking soda, a bottled algaecide product is far safer for your fish and the environment. You’ll only need to use a small amount of the right product rather than a damaging amount of a household chemical.
Reducing the amount of light that reaches the surface of your pond is the one of the best ways to reduce algae growth in the long run. Sunlight warms the water so algae can grow quickly, along with feeding it directly through photosynthesis. Many pond owners are surprised to find their water is perfectly clear after adding some shade. Don’t forget about lowering fertilizer runoff by being careful with how it’s applied near the pond.
