Do saltwater hermit crabs need need bigger shells?

[joshuashih1]

I bought some saltwater hermits for a clean up crew but when I bought them they were so small will they grow and wll they need a bigger shell or will there shell grow?

 

[Bifferwine]

You will need to provide them with larger shells. The shells are not part of their body, so they don't grow.

 

[joshuashih1]

thanks and do I need to feed them anything I got them for alge

 

[Bifferwine]

They will scavenge for food in the tank. They will eat the leftovers that your fish miss and the algae.