Barley straw is a natural way to fight algae. On contact with water, the straw starts to break down, and as it does so it releases peroxides into the water which combat algae. Available in mini bales, or as a concentrated extract of barley straw liquid, it's a natural way of chemically fighting algae.5 May 2020
What household item kills algae?
Hydrogen Peroxide. Hydrogen peroxide, used as a household disinfectant and cleaning agent, kills algae. Hydrogen peroxide does not differentiate between algae and other organic items like plant roots, so it must be used with care to avoid killing desired plants.
What is a natural algaecide?
Basically, an algaecide is simply a substance that can kill or mitigate algae, often utilizing copper sulfate or chelated copper. Copper is effective because it basically attaches itself to the algae in your pond and prevents photosynthesis, which causes the algae to die.15 Apr 2020