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Topics > Biology > Zoology

	Project title	Elodea and Goldfish
	Difficulty Level	Middle school
	Project page	Click here to view this science project
Description
This science fair project was performed to determine if an Elodea plant can grow faster when planted in aquariums occupied by goldfish. The experiment was done by growing Elodea in an aquarium with one, five and ten goldfish and also in a tank without any goldfish.
Instructions preview
1. For this science fair project, the independent variable is the number of goldfish in the tank i.e. none, one, two and three goldfish. The dependent variable is the average growth of the Elodea plants. This is determined by measuring and calculating the average height of the plants after 7 days. The constants (control variables) are the size of the aquarium, the amount of water in the aquarium and the amount of light received by the plants. 2. 4 fish tanks are filled with the same amount of water. The aquarium lights and filters are installed into the 4 .....

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