Forgive my lack of editing as I'm typing this stealthily while at work! *evil laughter*
@
Kaijubluee KryoMichli gave some great advice! I have potato bugs in with my snails in a 10 gallon tank, as a cleanup-crew, and there are also springtails. I like this because I can leave smaller bits of food in and they will take care of it- I have to do more cleaning out of the newest snail's home because I have no cleanup crew, but he's in a smaller quarantine tank still. I have heard some people who keep isopods and snails say they like keeping them separate for various reasons. They can be kept together happily just fine. The snails and bugs I caught wild seem to cohabitate fine, they do not bother each other. But if you're not looking to have a bioactive terrarium they aren't strictly necessary. I would consider both snails and potato bugs an easy pet to keep, as long as they have food, moisture, good surroundings, they're happy.
My best resource for snail care is actually reddit.
r/snails is really active and you can post questions and pics and get lots of information. For example here is a guide on snail housing I found on the r/snails reddit:
(link here to google doc about snail enclosures!) This guide covers tank size, substrate (soil), moisture, ventilation, and cleanup crews like isopods and springtails.
You NEED a calcium source in there 100% of the time. Cuttlebone is the best, eggshell can be alright but is not quite as high in calcium.
For food you want to give them a variety like was already mentioned, and make sure their options are nutritious.
Good foods:
Carrots
Sweet Potato
Kale
Peas
Green bell pepper
Various squashes
Zucchini
Broccoli
Asparagus
Green Beans
All can be fed raw.
Sometimes foods:
Cucumber
Spinach
Lettuce
Cucumber and lettuce are tasty treats but not very nutritious and snails can get addicted to them. Spinach is nutritious but also has an ingredient that makes it harder to absorb calcium, so you can totally avoid it if possible.
Do not feed:
Fruits (in generally the sugar isn't good for them and they don't have the same nutrition as veggies- they won't hurt them but I'd just avoid unless you don't have anything else onhand)
Avocado (heard this in various places, some say it's okay some say it's not)
Garlic
Onions
Citrus
Additionally, snails need a source of
protein once a week or so! They will eat dead bugs such as crickets and mealworms which you can get at a pet store and soak them in water for 30 minutes or so to re-soften them. My snails also like freshly killed earthworm. Another great option is bloodworms, you can buy them frozen from your local pet store and thaw out a little once a week. Some people feed them hardboiled egg; I've heard various things about this and it will definitely work if you're in a pinch, though a bug source is preferable just for being higher in protein.