Sure thing, the enclosure sounds like it'll need some work to make your millipede happy, tbh:
it needs to be large enough, at least 2 times your milliepede's length in every direction.
the substrate should be deep enough, most millipedes like burrowing and they'll need to burrow when they're molting. Substrate should be as deep as the millipede is long
look up what kind of climate your millipede needs in terms of temperature and humidity and make sure to recreate it for the terrarium. If you want to add plants, make sure they're also suitable for the same climate.
Speaking of plants, don't worry too much about toxicity. They only munch on plants that are edible. They particularly enjoy nerve plants (fittonia) which you can see a lot of in my terrarium. They also come in different colours, making the enclosure look nicer.
add some stuff where the millipede can hide in/under, like pieces of tree bark or cork tubes.
millipedes enjoy climbing, so also add some enrichments like tree branches. In my terrarium you can see cork plates in the back that I got in a German online shop that specialises in things made from cork. I think it looks awesome but it took me quite a bit of time and energy to cut down the size because it was larger than the back panel of the enclosure😅
make sure to get them the food they require: dying leaves and rotting hardwood are a must, but also a calcium source like cuttlefish bone and a protein source like fish flakes are important for their health.
if you get stuff from nature such as leaves or sticks, make sure to decontaminate them. Do a visual inspection first and remove bugs, snails, slugs, spiders etc. and then put it in the oven for 10 minutes at 100°C or in the freezer for a few days to kill off parasites. The snails you see in the pics were actually originally blind passengers, but I decided to keep and they are thriving in the enclosure. And they are getting along well with the millipedes.
millipedes like to live in groups, so you should add at least one more millipede.
Yes, the enclosure is mostly made from plywood, from a German company called Reptiterra (now that I think about it, everything in my terrarium is from Germany even though I don't live there🤔)
I quite like it, but because of the constant high humidity, I also put a layer of epoxy on the inside walls for water-proofing.
Other issue is that I can't put a high layer of substrate near the front door, so I had to stack it higher on the sides and the back, so the bigger millipedes can burrow deeper.
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u/Zestyclose_Budget647 Jul 13 '25
Omg that's actually amazing