Tried & Tested Remedies to Control Pond AlgaeIt is a known fact that there are different methods by which you can clear your pond of bothersome green algae which is also known as pond scum. Algae grow when exposed to sunlight due to photosynthesis as well as excess waste from the pond due to overpopulation. One of the most tried and tested means of preventing the appearance of algae is through the use of pond covers that deliberately block sunlight from activating the algae. Here are some more tried and tested methods against this common problem.
One of the easiest ways of controlling algae is to introduce aquatic plants such as water lilies, hyacinth, duckweed etc. Not only do they serve to block the sunlight off the pond but they also compete for the organic nutrients found in the water. It is recommended that at least two thirds of a pond be covered with aquatic plants in order to attain optimal results. Other suggestions can be submerged flora such as elodea, hornwort and sagittaria. What is interesting about elodea is the fact that it blooms one full month prior to the other species and has the capacity to spread very fast in the aquatic environment. For ponds that have moderate to severe algae issues should have these underwater plants installed near the surface so as to get more sunlight exposure. Once the algae problem has been resolved they can then be returned to the bottom of the pond.
Aside from plants and floating covers to reduce the amount of sunlight, animals such as tadpoles, water fleas and snails are also effective in helping reduce the algae population in ponds. Make sure to install frog tadpoles as it takes a couple of years before they grow up to be frogs. Tadpoles are great at reducing algae growth primarily because it is part of their diet.