Construction plans for a new enclosure. For P cambridgei.

[StephieCreate]

Usually the logic behind not going too big is to enable the tarantula to find its prey. Crickets can run but they can't hide. What you've got planned is all fine and good, but it will also give the crickets plenty of hiding places. If you throw a few crickets in there, you'll never know which ones died off and which ones were consumed. Maybe they all died off before the tarantula had a chance to find them.

I’m aware that can be an issue. I usually target feed. As even in a small enclosure I don’t trust the crickets. I’m terrified they will predate my tarantulas. ( my definition of target feed meaning I don’t leave the crickets to chance and place them in or around burrow entrances until it’s grabbed and I typically won’t leave until I see it’s been grabbed. I’ll give it a couple minutes before I add another)

 

[Introvertebrate]

I'll be doing some target feeding myself. On my latest rehousing, I may have gone a little bigger than I should have. The whole "feeders will eat you T while it molts" circumstance is a bit overstated. I've left feeders in during molts, and nothing happened. The feeder would have to have initiative and find the T, which is a challenge in itself.

 

[Charliemum]

Let me iterate that I am aware that they don’t actually need them as my tarantula is not that messy. However I feel that with the enclosure this size. It be beneficial in keeping mold and mildew in check. And because my crickets come from Petco a good number of them end up dead before they are fed too my two tarantula species I have. So I figured throwing them in a corner for this large enclosure would be a natural disposal of the carcass. I also planned for the decor a lot of leaf litter and live pathos so it allow for organic materials for them to both hide and feed on. And as I planned to cycle out my soil periodically from different corners it should keep populations in check. I’m including this information so that you guys who are way more experienced can determine if this is possible for me who is more new to the hobby. Or if you guys recommend that I’d avoid it until I’m more familiar over time with the hobby. However I also have to start somewhere. And I am a huge advocate of research and listening to the advice of experienced keepers. (Which is also how I ended up with this huge enclosure plan but I digress)

OK I don't do bio but it's something I am interested in and hope one day to achieve.
Picking your isopods is important you want a sp that isn't protein hungry, stuff, like dairy cows (Porcellio laevis) will seek out protein if you don't offer enough that's when your t becomes at risk .
It also depends on your set up not only will you need iso's that aren't protein hungry but you need a sp that can live in the same conditions as your Scream, no good getting something that needs more moisture then your t.
For bio you will also need more then just spring tings n iso's , they are only 2 ingredients in a bio viv , worms, and sub fauna is needed too, usually ppl take sub from their already cycled vivs to start off the new ones, but you can just as easily use forest collected sub to do this, I believe it's why most bio vivs don't work, can't bake a cake with just 2 ingredients .
Your other option is making your viv well in advance and letting it season before you add the t , this can take anywhere from 6 months to a year so i've read.
Don't forget too whatever isopods you choose you will need to feed them to, a few dead plant leafs and occasional dead crix won't be enough once your population gets going no matter what you choose, you have to think of it as Co habitation, you can't just sling em in n call it good, again not enough iso food puts your spood at risk.
As for pulling out sub you don't really want to do that all the time , the macro organisms that live in that sub take years to build up properly and establish, if your taking a chunk away every few months that won't ever happen, your better off cupping the t and removing overpopulation with tongs so you don't disturb or take anything you shouldn't.

As I said I do not have bio vivs atm but it is something I have been reading up on for 3 years in preparation for my girls getting their big girl vivs , and these are just bits I have picked up that I believe are important to a bio viv. Alot of it was picked up from @Wolfram1 some from utube, some I have read here on AB on random threads. Give it a Google/ stick it in our search bar n read all you can it's what I did. I don't think you can find an exact recipe for it though as your specifications are unique to you your house temp humidity ect so you will need to find what's right for your exact circumstances. It's all more guide lines then rules .
I hope this little info I have helps even if I can't give you an exact sp of iso at least it gives you a place to start .