Zoo Med Hermit Crab Growth Shell Medium (2pk)

• Two shells per pack – lets a crab compare and choose rather than being offered only one option.
• Wide opening – sized so a crab can retract fully inside for protection.
• Natural, unpainted shell – no coatings or dyes.
• Medium size band – the step up from Zoo Med's Small growth shells.

As with any natural shell, exact opening size varies piece to piece – Zoo Med doesn't publish a fixed diameter for the Medium band, so the two shells in a pack won't be identical twins.

Suitable for land hermit crabs (Coenobita species) moving up from a Small shell. Not suitable as the only spare in the enclosure long-term – once a crab grows into both, add a Large shell so there's always a next size available.

Rinse both shells in dechlorinated water before adding them to the enclosure. Remove any shell that's been fully vacated if it starts to smell or grow mould.

• Zoo Med Hermit Crab Growth Shell – Large and Extra Large sizes for the next moves up.
• Zoo Med Hermit Crab Sea Sponge – helps keep humidity up, which makes shell changes easier.

Sold as a natural product with no manufacturer warranty; shells are unique in shape and colour, and the product photo is representative. Standard shipping applies.

Why does this pack have two shells instead of one?

Offering a choice reduces shell fights and lets a crab pick the shell that actually fits, rather than being forced into the only option available.

My crab is still in a Small shell – is Medium too big?

Keep a Medium on hand as the next size up rather than waiting until the current shell is a tight fit, so the crab always has a slightly larger option available.

Do I need to prepare the shells before use?

Rinse in dechlorinated water before adding them to the enclosure.