This is one of ten e Books on the commercial production of ornamental fish. It is based predominantly on the author’s 30 years of experience, mostly onhis own farms. While a few of the e Books are purely commercial, others, particularly those on breeding, will also be helpful to hobbyists, understandable even by beginners. The following description is provided as aguide. Comprehensive section on essential aspects of fish-oriented waterchemistry. Includes methods and chemicals for managing water chemistry onfish farms, and for breeding, with methods for softening, hardening andbuffering water, and adjusting p H etc. Predominantly commercially oriented, but with many aspects of interest to serious hobbyists.