bearbait - Just for my own curosity, I went and searched all the forum topics for discussion about crappie. Results follow:
Creating Habitat 1 mention (yours by bearbait)
Types of Fish to Choose 8
Creating the Food Chain 3
Evaluating&Adjusing Fish Pop 5
Correcive Stocking 6
Fertilization 3
Feeding 3
Should I aerate? 1
Water Chemistry 1
Product Sources 3 indexed articles in PB Mag
Help 2
Questions & Observations 20
See? Discussion of crappie is scattered in many places here. Read all of it, and you will be pretty informed about crappie. Numerous forum members will try to help you with additinal questions.
The "Search" feature is a very helpful tool for finding something or a specific topic on this forum.
I have question, why did you post your initial crappie question under "Creating Habitat' instead of under "Types of fish to choose"?

aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management