My snails are fed plaster of Paris pucks, calcium pills (Tums or Caltrate), snail jello, veggies, plants (for Pomacea canalculata only), commercial foods and everything else. Broken eggshells can be included although since I do plaster of Paris pucks, eggshells may be unnecessary anyway but nevertheless useful to minimize shell erosion incidents.
Snail Jello Recipe
Prepare only what your snails can eat in a week or two because they seem to get spoiled quickly.
Baby food (any brand)
Calcium pills (optional)
Fish food (optional)
Here is what I did.
1. Boil water in the pot. Pour the gelatin in there and keep stirring.
2. Pour baby food into a microwaveable container and set microwave at medium and keep it on for a minute.
3. Mix baby food with honey, crushed calcium pills (fine powder) and then fish foods.
4. Pour the mixed baby foods with gelatin.
5. Let it cool off for a few minutes and place it in the fridge afterwards.
By the way, the calcium pills I am using can be Caltrate 600mg with Vitamin D or Tums (flavored vice the peppermint). It can be either put there or simply drop it to the tank and the snails simply shovel them in. Honey is added because the shy snails seem to approach it readily as they like anything sugary. It'll cloud the water a bit but no harm is done in the process anyway.
What you need
400 grams of plaster of Paris (Dap is often recommended but I used Bronco)
50-100 grams of fish food (pellets or granules are best)
Stick to stir
Ice cube trays
Pour the plaster of Paris over the clean water. Stir as you pour until the plaster of Paris look like thick paste. Then try to mix in the fishfood as you stir and pour the mix to the ice cube trays. Make sure to smoothen the plaster of Paris as you pour. Place them in a warm dry place for a few hours. You can place the fan on it if you feel it necessary. Afterwards, twist the ice cube trays to remove the calcium blocks.
The more humid the environment, the longer it takes to dry the plaster of Paris. It should harden as a rock and sink. Be careful not to allow any thick bubbles as you work on it. If the calcium blocks have gooey stuff at the center, then it is not dry enough. It should also not break apart.