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Algal Blooms

In: Science

Submitted By keeeemeee
Words 452
Pages 2
Experiment:
Materials:
* Algal culture * Water (salt water or fresh water) * Two plastic containers * Aluminum foil * BIOnix (Liquid fertilizer) * Sunlight * Sticks * Two fishes * Fish food
Methods:
1. Fill the half of the two containers of water, put algal culture at the same container the same time. 2. Cover the top of both containers with aluminum foil. Make sure to use the sticks to create small holes in the aluminum foil. 3. Label the containers 1 and 2. 4. Put one fish in each container. 5. Place the containers where it can have enough sunlight. Feed the fishes every day, but drop more foods on the container labelled “2”. 6. After 4 days, you can see that the water of both containers change its colour same as the colour of the algal culture we mixed at the first step of the experiment. Mix 20mL of liquid fertilizer to the container labelled 2. And leave it for two more days. 7. After two days, you can observe that the container labelled “1” will have the same volume of algae, while the container labelled “2” will be observed to have the well called algal blooms, it also change to a darker colour and an irritating smell.

On the first to fourth day of experiment, both containers have the same cases. It has greenish water caused by the algal culture mixed in the water. But after the liquid fertilizer was mixed on the second container, the fish will be noticed having hard time to swim in the container. The fish in the container labelled “2” died at the fifth day the same time where the algae blooms easily caused by the chemicals I have mixed in the water. When the containers where opened one by one starting with labelled “1”. The water seems to be greenish caused of the algal culture, but it doesn’t have the bloom of the algae. The fish in this container seems to die soon if the algae will

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