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Algal blooms, depending on the severity, can kill fish very quickly. Minor blooms may kill fish that are sensitive to drops in the oxygen levels. Severe algal blooms are capable of killing all fish life in an area. The end results usually take a couple of days at the most.

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Q: How fast do harmful algae blooms kill fish?
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What are the results of some harmful algae blooms?

harmful algae blooms(HAB) cause the following condition 1- Red tide phenomena(change the usually colour of the sea into green,brown and red )due to pigments that oroduced by this algae 2-this HAB secret toxin this toxin cause damage to central nervous system of fish and caus paralysis to it then die


What is the main ingredient in fertilizers that can cause algae bloom?

The main ingredient in fertilizers that can cause algae blooms is phosphorus. When excess phosphorus enters bodies of water, it can promote the growth of algae, leading to harmful algal blooms. These blooms can disrupt aquatic ecosystems and deplete oxygen levels in the water, negatively impacting fish and other marine life.


What consequences can result from algae and bacteria growing too quickly?

When algae and bacteria grow too quickly, they can cause harmful algal blooms (HABs) or bacterial blooms. These blooms can deplete oxygen levels in water bodies, leading to fish kills and other marine life die-offs. Additionally, some types of algae and bacteria produce toxins that are harmful to human and animal health when ingested or during contact.


How Harmful affects of runoff fertilizer in ponds streams and fish?

The runoff from fertilizer creates algae blooms. when the algae decomposes it takes away dissolved oxygen from the water. This suffocates fish, causing dead zones. Google it. you can find tons of answers. scientific America is a reliable source. hope i helped


Is algae a sign of a healthy stream?

No: algae blooms come from eutrophication of water, or excess nutrients. These nutrients come from eroding soils, plant matter such as leaves or grass clippings, fertilizer runoff and pet waste. Algae blooms grow in the presence of these pollutants. As they die and sink to the bottom, they are decomposed by bacteria. This process depletes oxygen in the water, making it hard for fish and other aquatic organisms to breathe. If the algae blooms are large enough a fish kill can occur; the fish and other animals litteraly suffocate from lack of oxygen and die. In short, algae is a sign of nutrient pollution and poor conditions for fish.


What is the harmful effect of an red algae?

Some algae in the red tide contains a poison that can kill fish.


Is there such a thing as a natural fish kill?

Yes. Because algae blooms occur naturally. Also, when there's too much algae, there will be no circulation of carbon dioxide in the water. Therefore resulting a fish kill.


What are the harmful effects in green algae?

The useful effects of algae is that it provides oxygen for various living things. Algae is also a food resource for humans and fish. Algae can become harmful if they produce toxins. Too much algae in the water can kill fish because the algae consumes a great amount of oxygen and can block the sunlight from reaching underwater.


How do algae blooms impact aquatic ecosystems?

They lead to the deoxygenation of the ecosystem, thus killing fish and other organisms in the ecosystem.


What is a toxic bloom that kills fish?

You may be looking for the word "Algae" That is the stuff that "Blooms" then decays and poisons the water which causes fish kills.


How can algal blooms be bad?

Algae blooms are a form of bacteria and can cause skin irritation or respiratory irritation in people who get in the water or handle the algae. Some blooms of blue-green algae can produce chemicals that are toxic to animals and people who drink the untreated water.


How does fertilizer kill fish and other aquatic life?

Fertilizer IS nutrient rich. When it gets into lakes and ponds, it causes massive algae blooms. These massive algae blooms soon die off, contributing to massive amounts of carbon dioxide accumulating in the lake or pond (and thus a decrease in oxygen concentration). Such a decline in oxygen concentration will suffocate fish and thus cause fish kills.