Tarantulas and Spiders

[3skulls]

So, how big do dubia have to get to start breeding? I bought 150 mediums, but they seem a little on the small side. Just some general tips would be great, I went looking for information but the best I got was a 3-1 female male ratio was the best idea.

They have to molt out to adults. 2"
Keep the temps up and feed them quality food.
Depending on the size, you still have a few months to go.