Algae and Blanket Weed suffocate garden ponds mainly due to their extremely fast growth during the early spring period. Blanket weed can grow up to a foot a day and can quickly take over your pond, posing a risk to fish and other aquatic animals. One of the ways to control these algal blooms is to provide competition for the light and nutrients they need. Oxygenating plants such as Elodea Crispa take away the carbon dioxide that the algae need to grow and convert it to oxygen.
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