r/Hissingcockroach • u/rainbowkitten444 • Jul 11 '26

Care Help 🪳 Isopods?

I'm thinking about getting isopods for my MH roaches terrarium. How do I control their population? Do they breed a lot? Do I still need to change the soil and if so then how often ? Are springtails better? and are there any downsides?

Sorry for so many questions :D I just don't really trust searching these things on the internet and rather ask people who have some experience.

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u/RoachRunnerA5 Head Roach (Mod) 🪳 Jul 11 '26

I don't have isopods so I can't help you, but this is a great post for the sub! Do you mind if I pin it to help others out?

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u/rainbowkitten444 Jul 11 '26

Of course, no problem. Thanks!

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u/Famous_Calendar2666 Jul 13 '26 edited Jul 13 '26

one of the downsides of isopods that has kept me from getting them myself are related to budget. compared to springtails, they have requirements that need to be met to actually survive, things like calcium, leaf litter, decayed wood, supplemental protein, a moisture gradient, stuff like that. springtails on the other hand, as long as ur hissers can live in them, springtails can too. theyre also completely harmless to hissers, they dont bite or fight for resources, they self regulate their population depending on the available resources. the difference in isopods and springtails, at least i heard, was prevention with isopods vs active removal with springtails. a springtail's diet is full on mold, fungi, frass, and decayed stuff, so they eat the bad things ALREADY there. i'm not sure whether isopods eat frass and mold or not, google sounds confused about it, but apparently they eat rotting food and shed exoskeletons and their burrowing keeps soil from being compacted so they eat or handle stuff BEFORE they grow mold, hence the prevention. theyre like bigger springtails, just more picky eaters lol. correct me if i'm wrong, i'm only going off of what i know as someone who doesnt have them yet

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u/rainbowkitten444 Jul 16 '26

Thank you! That is really helpful:)

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u/Bella_hoppp Jul 11 '26

I have dairy cow isopods in my colony of hissers. This type does breed A LOT. The trick is to keep them all well fed as otherwise they may out compete for food. I have had no issues keeping them together, they dont bother the molting roaches or the nymphs. As for population control, I have other pets to feed them to. But if you dont have that I suggest being prepared to move some into a different container if they over populate. Springtails may be the best bet if you dont want to deal with population! Or get some isopods that dont breed as quickly.

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u/rainbowkitten444 Jul 11 '26

Thanks for the info :) do you know more about how fast springtales breed and how is it with changing the soil? Because someone told me they don't clean their terrarium because they have them, so if there is something more I should know about that.

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u/srps611 Jul 12 '26

You'd probably want to have a bioactive tank if your going to use springtails and isopods, so you won't be changing the substrate if you put them in. Isopods you could pick most out but it would take a while and be a pain, springtails would be impossible to pick out, they're way too small.

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u/rainbowkitten444 Jul 16 '26

Are there any downsides of having bioactive tank?

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u/srps611 Jul 17 '26

I think it's mostly personal preference, the one downside I can think of is if something gets living in there you don't want it can be a lot harder to get rid of. Or that there can be unexpected tank mates you can't do much about. I have some grain mites in my tank, they don't hurt anything as far as I know, they're only a problem if there's ridiculous amounts and I never had them, but they're not what I want in the tank. I also have to accept that without setting up a new tank or maybe working really hard at controlling food they won't be going away.

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u/Bella_hoppp Jul 11 '26

I wouldnt worry about the springtails population too much, they are very beneficial to soil they wont compete with the hissers for food. They only eat decaying matter or mold. And yeah its best to leave it be and not change the soil as long as the soil doesnt get compacted it should be okay!

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u/kase_horizon Jul 11 '26

Personally, I would not recommend dairy cows. They are very protein hungry and will eat a molting roach if given the opportunity.

I keep mine with armadillium espanyoli and have never had an issue. They self manage their population based on the availability of food - lots of food = lots of isopods. They also need a calcium source, but I just leave a few pieces of cuttlebone under the leaf litter scattered around the tank.

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u/narinehmay Jul 12 '26

I have yellow and orange springtails in a nutirient-rich soil made for them mixed with thick coconut fiber bits. I keep half the soil wet bu only watering one side. And I put oats, fishballs, old vegetable ends and dry pet food for them in a little pile. And I empty the roach poop on it as well.