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Can You Put a Sea Urchin in Freshwater?

By Eleanor McKenzie

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The very brief answer to whether you can put sea urchins in freshwater is a resounding no. Sea urchins are suited only to saltwater aquariums. Products that imitate seawater are available from specialist stores, so you can keep sea urchins without having access to the sea.

Sea Urchin Care

Sea urchins are saltwater creatures. Putting a sea urchin into a freshwater environment will kill it. Ideally, you should use seawater in the habitat. This has the optimum salinity for keeping sea urchins. Alternatively, you can use a seawater mix from specialist saltwater aquarium stores, which you add to freshwater. However, you still need to ensure that the salinity of the water is within a specific range, as water that is too low or high in salt will affect the health of the sea urchin. The water should have a pH value of 8.0 to 8.3, which you can measure with a pH meter. This is the PH value of seawater.

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Author

Based in London, Eleanor McKenzie has been writing lifestyle-related books and articles since 1998. Her articles have appeared in the "Palm Beach Times" and she is the author of numerous books published by Hamlyn U.K., including "Healing Reiki" and "Pilates System." She holds a Master of Arts in informational studies from London University.

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