Three Types of Algae

Algae are organisms that thrive in an aquatic environment and have been classified as both plant and animal by marine biologists. Algae are considered similar to weeds by those who maintain fish ponds or care for fish in aquariums and tanks. The growth of this organism is dependent on nutrients, a reliable light source and the proper carbon dioxide levels. Control measures designed to inhibit the growth of algae range from the use of bleach to the management of the nutrients in an aquatic ecosystem.

Black Brush Algae

• At first glance, black brush algae resemble small tufts of hair attached to a plant or stone. By definition, black brush alga is a form of red algae that grows primarily on slow-growth and wide-leaf plants. Black brush is considered unique because it has adapted to fresh water, unlike the majority of red algae, which tend to thrive in salt water.

Green Water Algae

• Green water or planktonic algae are single-cell alga that thrive in aquariums and fish ponds. The growth of the organism, under favorable conditions, will often lead to the telltale occurrence of cloudy green or "pea soup" water. Many pond and aquarium owners try to control the growth of green water algae by regulating the availability of vital nutrients.

Staghorn Algae

• Staghorn algae resemble strands of hair, with ends that branch in similar fashion to the antlers of a deer or an elk. This type of algae grow on the ends of leaves in the wild, or near the surface and on the equipment of aquariums. Staghorn algae can also be found in tanks with a constant light source.