Hello, I don't have a cover for my terrarium (its a 50? gallon tank) and I was wondering what you sugggest for a cover, I'm not overly worried about moisture, but more so about light (should I also get a sun lamp thats a weak wattage) and air
I don’t think air is going to be much of a problem if you only keep a few snails, even if you put a plastic lid with air holes in it, but of course air flow will help prevent fungus/mold from overgrowing things. That may or may not be desirable depending on whether the species of snail/slug you keep enjoys fungi and molds.
Your biggest concerns in a large tank would be: finding and destroying eggs in time before you have 300 tiny snails all over the place, which happens very quickly.
Once you have these tiny ones (aka “buttons”), they can squeeze through tiny openings, and will go (and perish) everywhere. So you need to think about making your cover button-impermeable. I ended up hot-gluing a piece of weed-block (aka landscape fabric, or weed barrier) to the inside of the mesh lid that came with the tank. It is air-permeable, but the holes are small enough that the buttons and even young hatchling slugs couldn’t make it through.
Since you don’t have a cover, maybe you could use a plastic cover from a storage bin that’s large enough, or also, make a sort of “shower cap” for the terrarium, with an elastic to keep it on tight. Snails will get into the creases and folds though, so maybe not the best idea.
If you have a hot glue gun, you can use some styrofoam to glue a lid that fits tightly around the top of the tank, leaving some/all of the middle open and attaching some weed block there for airflow.
I was unable to find anything about UV needs of land snails, and I’m sure it varies per species, depending on habitat. If you are keeping snails that are known to be out and about in the sun, they may benefit from an hour or so of full-spectrum UV.
I hope this helps - feel free to follow up with more questions!












