Care of Astreas and Blue-Legs

[acidbaby1]

Do Astrea snails and Blue-Leg Hermits need care and feeding beyond the right temp, chemistry and algae in the tank? I know my hermits will need bigger shells, but is there any behavior to indicate whether they need more food?

Also, do these animals depend on photosynthesis, or is two hours of daylight fine?

 

[Bill2]

good conditions in your tank will provide good conditions for them. Crabs and their likes are not photosynthetic