Changes

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<h4>Phosphorous</h4>

<h4>Phosphorous</h4>

<p>Plants (including algae) require three macro nutrients to grow: Nitrogen, potassium, and phosphorous.  Of these three, phosphorous is the often the "growth-limiting" nutrient. i.e. the local environment may have an abundance of nitrogen and potassium, but algae won't develop until phosphorous is added too. </p>

<p>Plants (including algae) require three macro nutrients to grow: Nitrogen, potassium, and phosphorous.  Of these three, phosphorous is the often the "growth-limiting" nutrient. i.e. the local environment may have an abundance of nitrogen and potassium, but algae won't develop unless phosphorous is available too. </p>

<p> Major sources of man-made phosphorous in the environment include agricultural fertilizers...

<p> Major sources of man-made phosphorous in the environment include agricultural fertilizers...

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