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Sponges are often added to the tank to increase humidity and generally are better replaced by dried moss soaked in saltwater.

Hermit crabs pick and tear at them much like they will any tank decoration. They will eat it over time and as long as it is a natural sponge it is perfectly safe. Hermit crabs are natural scavengers so they are programmed to tear things apart and consume them if they are consumable.

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16y ago

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