Cabomba is an aquatic plant genus, one of two belonging to the family Cabombaceae. It has divided submerged leaves in the shape of a fan and is much favoured by aquarists as an ornamental and oxygenating plant for fishtanks. Colour of lights given to the tank differ from one tank to another depending on the preference of the aquarist. The plants take in light, carbon dioxide and water in order to photosynthesize and make food. Our group of students wanted to find out if the color of light affects the growth rate of Cabomba. If so, which colour allows the plant to grow the best. Our results tell us the ideal colour of light that the owners should provide to have their plants grow healthily. Colors are simply different wavelengths of light that are reflected by objects. For example, plants look green because they have a lot of chloroplast in them, which absorbs all visible wavelengths of light except green, so leaves look green to us. We used different colored lights for individual setups to show how much air each Cabomba gives out. The results in water displacement in the test tubes of the setups. Different colors are associated with different encouragement for different parts of plants to grow. (Wikipedia, Cabomba)

Tips for using Cabomba
Cabomba does best when grown in neutral water under moderate lighting. Provide at least 2 watts per gallon of full spectrum (5000-7000K) lighting. Water temperature between72°-82°F, an alkalinity of 3-8 dKH and a pH of 6.5-7.5 is ideal for proper growth.

Cabomba is a pondweed with specialised tissue called aerenchyma that allows gases to diffuse inside the plant. If you cut through the aerenchyma these gases can escape and bubble out of the plant.

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