Dont get bummed if you dont see the wigglers right away, as they may be kinda deep in the cave. You may not see anything for a week, and then all of the sudden, you have free swimmers.
I had my con pair in a 29 together, and didnt realize they spawned untill the fry were almost free swimming. I had put in a few 72 hr weeks at the plant, and was relaxing on a sat afternoon when i noticed they had been hanging out at the same spot in the tank for days. Then, after a closer look i saw them. I immedeatley started crushing flake into a very fine dust, and fed the fry with a turkey baster.
Now some of the male fish from that batch are larger than their mother, as i have them growwing out in a 55.
Have fun with your little science project.