Changing Tenebrio molitor substrate

[kupo969]

I started with a colony of about 2k meal worms and now they are almost completely beetles. I thoroughly inspected the substrate and found mealworm nymphs, almost microscopic.

My question is, when should I change the substrate? HOW would I go about doing this?

 

[CT9A]

Since your beetles have already laid eggs into the substrate and growing, it would be a pain to remove them. It doesn't sound like you need to change the substrate, so I would wait until they grow larger and change the substrate whenever you feel it is needed.

 

[Choobaine]

unless your substrate is mouldy or full of mites there's absolutely no need to change it.

 

[kupo969]

Ahh, I see. I'm asking 'cause I like to keep them sepereate. Thanks for the info you two.