Hi Angie. My favorite is "The Marine Aquarium Problem Solver" by Nick Dakin. Its a small hardback, relativly inexpensive.
- solutions to all major marine aquarium problems
- Answers to more than 500 Questions asked by hobbiests
Key background info on most species of popular fish and inverts
Well written, organized, nice pics
It gives setup information, hardware information, and species information in a nice, easy to understand format. I hope you like it too!