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Algae Control in Ponds and Water Gardens

Free Floating AlgaeWhat fun is a pond with pea-green water or masses of stringy gunk growing from every submerged surface? You work so hard to keep your pond clean, clear and looking good, but even with the best efforts, algae can appear in a flash, a stringy, slimy eyesore, mucking up the view. Most algae outbreaks can be quelled by addressing water chemistry (nutrient) issues or finding a way to control the amount of light that penetrates the water’s surface.

Getting to the proverbial root of the problem is the best solution, but there are also numerous algae control products on today’s market to help you rid your pond of that unsightly green invader, at least temporarily. While we generally recommend algaecides as a last resort, when you reach that point it’s important to use them correctly to ensure the safety of fish, plants and other inhabitants of your pond.

 

Getting to the Root of the Problem

Algae blooms are generally the result of either too much sun exposure or too many nutrients available in the water for the algae to feed on. If your pond is exposed to full sun for the majority of the day or when it is strongest, alga take advantage. You can provide shade using floating and marginal plants which provide cover for fish and other pond inhabitants, as well as aiding in nutrient control. Desirable flora like floating lettuce, hyacinth and duckweed will compete for dissolved nutrients and provide the shade you need while also serving as a food source and shelter for fry that may be produced by koi and goldfish. Read More »