Garden ponds full of algae one might reckon are the number one bane of their owners. The worst thing one can do is to introduce chemicals in an effort to kill off the algae. Frankly, while filters may help, they are not necessary in any pond that does not have food introduced into the water…koi ponds. Even so, the best way to minimize algae growth is from a good coverage of top growth in the form of water lilies.
The benefits of water lilies in the garden pond are many. New garden pond owners are often perplexed by the paradox of advice that in the near term seems to increase misery: place the garden pond in full sun (or partial sun). The sun increases the ability of algae to photosynthesize and green soup prevails. What any garden pond needs is a balance, and water lilies do their part from above and below. The water lily’s large leaves provide shade to the pond (and its inhabitants) and the roots utilize nutrients that might otherwise feed algae…a biological filter of sorts.
If you enlarge the photograph below by clicking on it you will see that the water is so clear that new water lily leaves are visible well below the surface of the garden pond.
Garden ponds can be frustrating, but introducing the right practices and then being patient will pay off. Water lilies…no chemicals…some goldfish to eat mosquito larvae…and let it be.