For aquatic systems and supplies, consider Aquatic Eco-Systems: http://www.aquaticeco.com/
An online magazine dedicated to managing private waters: http://www.pondboss.com/
Species Selection for Recreational Fishing in Small Ponds and Lakes Conte, F.S., J.B. Waldvogel, and T.S. Vaught. 2000.
Fish Stocking Strategies for Largemouth Bass in Recreational Ponds and Lakes Conte, F.S., J.B. Waldvogel, and T.S. Vaught. 2000.
Pond Fertilization- Initiating an Algal Bloom Conte, F.S. 2000.
Phytoplankton and Recreational Ponds Conte, F.S., J.S. Cubbage. 2000.
Channel Catfish Farming Handbook by Craig C. Tucker (Author), Edwin H. Robinson (Author).