Meal worms handle crowding well. Don't worry about having too many as long as they have plenty of meal to eat and the frass doesn't displace it.
As long as they're consuming all the veggie matter you give them, it's probably the right amount.
The temperature sounds about right. They will develop at a steady pace, faster at 80 degrees, though.
Your worms are darker because they're reaching maturity. They will pupate soon.
The substrate, bran and oats, is courser than the frass. When I'm pretty sure all the worms have reached the size that they won't sift out with the frass, I sift everything through a strainer, and the worms and uneaten meal won't go though it. Usually you'll know it's time to sift out the frass because the substrate will give off a slightly unpleasant odor. After sifting, you'll be left with a lot of worms and a small amount of uneaten meal. The frass you can toss or use on plants.
I then add fresh bran and replace the worms. I don't think occasional handling of the worms bothers them much, nor shaking through a sifter. They have a very elemental awareness.
As for appearing "clean" or dusty, I imagine it's due to the substrate they're raised in. I've never noticed my worms being "dusty".
What are your plans for the beetles when they morph from the pupa stage? Are you just going to keep on with the one container? It's fine if you are.
As long as they're consuming all the veggie matter you give them, it's probably the right amount.
The temperature sounds about right. They will develop at a steady pace, faster at 80 degrees, though.
Your worms are darker because they're reaching maturity. They will pupate soon.
The substrate, bran and oats, is courser than the frass. When I'm pretty sure all the worms have reached the size that they won't sift out with the frass, I sift everything through a strainer, and the worms and uneaten meal won't go though it. Usually you'll know it's time to sift out the frass because the substrate will give off a slightly unpleasant odor. After sifting, you'll be left with a lot of worms and a small amount of uneaten meal. The frass you can toss or use on plants.
I then add fresh bran and replace the worms. I don't think occasional handling of the worms bothers them much, nor shaking through a sifter. They have a very elemental awareness.
As for appearing "clean" or dusty, I imagine it's due to the substrate they're raised in. I've never noticed my worms being "dusty".
What are your plans for the beetles when they morph from the pupa stage? Are you just going to keep on with the one container? It's fine if you are.