Nutrients in water can be used to grow useful algae to feed fish and thus get more fish. Just as farmers are using fertilizers to grow more crops to feed people and animals. The problem is no one asks which algae is good and which is bad and how to grow good algae that is food for fish. Why does excess nutrients in water result in algal blooms ? If algae are food for fish, the availability of more algae should result in more fish. The exact opposite is actually happening, algal blooms are resulting in decline in fish. Diatom Algae are beneficial algae, Cyanobacteria ( Blue Green Algae ) are harmful or nuisance algae. Diatoms are known as 'grasses of the oceans' , so cyano are like weeds. Have you ever though of what would happen if farmers used fertilizers and grew weeds, instead of grass or grass instead of grain ?

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Nutrients in water can be used to grow useful algae to feed fish and thus get more fish. Just as farmers are using fertilizers to grow more crops to feed people and animals. The problem is no one asks which algae is good and which is bad and how to grow good algae that is food for fish. Why does excess nutrients in water result in algal blooms ? If algae are food for fish, the availability of more algae should result in more fish. The exact opposite is actually happening, algal blooms are resulting in decline in fish. Diatom Algae are beneficial algae, Cyanobacteria ( Blue Green Algae ) are harmful or nuisance algae. Diatoms are known as 'grasses of the oceans' , so cyano are like weeds. Have you ever though of what would happen if farmers used fertilizers and grew weeds, instead of grass or grass instead of grain ?