A properly built enclosure is the difference between a thriving isopod colony and a slow die-off. Here’s exactly how to set one up, step by step.
Step 1: Choose Your Container
Plastic storage bins, small glass terrariums, or critter keepers all work. Size depends on colony size — a 6-quart bin is plenty for a starter colony of 10-20 isopods. Avoid airtight lids; some airflow prevents stagnant, overly wet conditions.
Step 2: Build the Substrate Layers
From bottom to top:
- Drainage layer (optional) — a thin layer of clay pebbles if you’re worried about excess moisture pooling
- Main substrate — a mix of coco fiber/coir and organic topsoil, 2-4 inches deep
- Leaf litter layer — oak or magnolia leaves scattered on top, both a food source and hiding cover
- Wood pieces — cork bark or untreated decaying hardwood adds surface area and a food source as it breaks down
Step 3: Add Moisture
Mist one side of the enclosure heavily, leaving the other side drier. This humidity gradient lets isopods choose their preferred moisture level rather than forcing the whole enclosure to one humidity level.
Step 4: Add Your Isopods
Introduce isopods to the damp side first and let them explore. Avoid handling them directly with fingers if possible — use a small scoop or cup to reduce stress.
Step 5: Ongoing Maintenance
- Mist 1-2 times per week, adjusting based on how quickly substrate dries
- Feed every 3-5 days (see our feeding guide)
- Check for mold weekly — light surface mold is normal, heavy mold means reduce moisture
- Add fresh leaf litter every few weeks as the existing litter breaks down
Once your enclosure is dialed in, most beginner-friendly species (see our species guide) will begin breeding within a few weeks.
Isopod Care Hub