What's Wrong With My Snails' Shells?

[DreamerHorse]

I boiled for a few minutes till it's soft and falling apart. Should they eat it overnight, or do you think they will ignore it?

 

[DreamerHorse]

Update...

The snails have eaten a good portion of the collard. I took out the leftovers to prevent it from rotting in the water. The snails just like their veggies really well done.

Their shells are growing in nice and thick. I can't wait until they look loads better.