How to Control Pond Algae

Controlling Pond Algae

pond algaeAt Russell Water Gardens, we understand that your outdoor water garden’s upkeep is paramount to its continued beauty. When discussing how to control pond algae, it is important that you keep in mind the most crucial four factors of pond maintenance. In this article, we will be discussing plant balance, construction, maintenance, and equipment. Whether you are a long-time water garden owner, or you are just discovering a difficulty with accumulating algae, this helpful guide from Russell Water Gardens will aid you and your family how to control pond algae.

Plant Balance

For those with water gardens, and not koi ponds, having the right plant balance can be essential to preventing algae growth. Floating plants can assist in removing the abundance of nutrients in your pond naturally through their growth cycle. Along with underwater plants, algae growth is stopped by removing the food source of the bacteria. It is important to remember, especially if you have a young pond, that some algae is natural during the first few years of pond development. As your pond ages, algae growth becomes less and less of an issue.


To ensure good water quality in your water garden construction can play a major factor. 40% of your ponds surface area should be a deep zone, which should be two feet at a minimum. If you have a koi pond, your deep zone should be at least three feet. When constructing your deep zone, a slight slope will assist you in the future when removing debris.


It is important to remember, when discussing pond maintenance, that some debris build up is perfectly normal. You should take care to remember that any more than ¼ of an inch of sludge means that it is time to remove debris from your water garden. The debris removal process can be made simpler with devices such as a pond vacuum, or a skimmer net. There are also enzyme and bacteria products that can assist you with overall pond quality, these products can also reduce pond odor.


When discussing pond equipment in relation to controlling pond algae, your pond pump can be your most important tool in prevention. Your pond pump should always be moving at least 50% of the total volume of water in your pond. If you have koi in your pond, your pond pump should move 100% of the water. Next to your pond pump, your pond filter is another important tool in preventing algae growth. As your pond ages, pond filters become less important as natural, biological filtration begins to occur, naturally increasing water quality. If you require additional assistance with how to prevent pond algae, or guidance building your perfect water garden, contact Russell Water Gardens today. We are available by phone at 800-844-9314.