I had the luxury of a spare tank, which I wanted to change the gravel so as to reduce the pH.

But instead of changing gravel, I decided to try out CPB when I saw them at a local fish shop (LFS), which is also out of curiosity whether it is hard to breed CPOs (and the variations).

Bought 4 CPB (lucky that it's 2 male, 2 female) in late November 09. While in quarantine, I saw a male attempting to overturn a female. Not long after introducing them into the tank, I noticed 1 female being pregnant.

Last Sat evening, I saw the other female mating. As of last night, that female was bending very tightly (as if, she was having cramps). Will go back and check out tonight to see if she is pregnant.

Anyway, the 1st pregnant CPB has hatched her eggs last night. Here's the video taken using hp (blur image tho). If you look at the 3mins 40sec part, there is a baby CPB on the background.
YouTube- Drawf Crayfish Hatching Babies

Just to add a little info on my tank. It's nearly a bare tank, with some SS mesh (US Fissiden), a lava rock, a few tubes for hiding. The base is white sand thingy, thus pH is higher at about 7.5. Water temperature is about 26 degrees. Apart from the abv, I don't hv much more info on the tank perimeters.

I feed them once a day with Hikari Crab crusine (did i spell it right?).