Deb, Print Bob's learned comments, reread them at least once a year, and keep them close as reference material. As you learn more about aquatic biology his words take on more meaning.
Using dye that inhibits photosynthesis in fisheries management is a very simplistic management style that reqires a minimum amount of knowledge of how the ecosystem operates, yet allows one to artifically boost the carrying capacity through artificial feeding of fish in a water body. I agree with Bob that fertilization produces larger standing crops and healthier overall aquatic ecosystems (food chains & detrital recycling) compared to using dye management methods. However the fertilization method requires a good understanding of what is going on in the water body. Few truly have or fully comprehend this required knowledge to make it CONSISTANTLY work properly over the long term.