Those who have waged war on Hydra never forget them. Those who haven't suffered the ravages of the aquarium pest Hydra, consider yourself lucky.Hydra not only resemble jellyfish, they also have the same ability to sting prey. Too bad their prey are your aquarium fish. Add to that the fact that they multiply rapidly, and you can have a major headache in no time. Here are some methods to clear your tank of Hydra and well as tips to avoid them in the future.
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Photo © Darcy Carr
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