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Project title Comparing different types of aquarium water filtersFeatured science projectScience project video
Difficulty Level Middle school
Project page  Click here to view this science project

Description
This science fair project was conducted to compare the effectiveness of different water filtration systems used in aquariums. The experiment involved the under-gravel type filter and the sponge filter. 

Instructions preview
1. For this science fair project, the independent variable is the type of filtration system used – sponge filtration or under-gravel filtration. The dependent variable is the pH reading and the ammonia content of the water in the aquarium. This is determined by using a freshwater test kit . The constants (control variables) are the number of fishes in each tank, the types of fish used and their age/maturity, the size of the tank and the amount of fish food given daily. 2. The fish tanks are prepared by setting up the sponge filtration system and the under gravel .....
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