Examples of prokaryotes are bacteria, archaea, and cyanobacteria (blue-green algae).

Phytoplankton are microscopic marine algae. Phytoplankton is the base of several aquatic food webs. Phytoplankton, also known as microalgae, are similar to terrestrial plants in that they contain chlorophyll and require sunlight in order to live and grow.

50,000 microalgae

Microalgae form the viable biodiesel feedstock. They can be found in soils, ice, lakes, rivers, hot springs, and oceans, anywhere sunlight and water cooccur. They have a simple cellular structure and are a diverse group of photosynthetic eukaryotes ranging from unicellular to multicellular forms.

Algae could also provide waste removal, too. If human waste is used as a source of food for the algae, it will recycle nutrients like phosphorus and nitrogen into a form the astronauts can then potentially eat. This could be beneficial on Earth, too.

Not only can algae be a source of greens, protein, vitamins and minerals, it can also strengthen the immune system, help cleanse the body of toxins and boost your energy.

Some kinds of algae produce harmful toxins (poisons). Toxins produced by harmful algal blooms in a marine environment can impact human health as well as seafood harvested from algae-affected water. Blue-green algae, or cyanobacteria, are harmful algae that can be found in almost all freshwater systems.

Take out all items covered in algae and add them to a container. Next, you can either pour boiling water over the affected items and allow them to cool off, or boil everything in the container for about a few minutes to kill all Black beard algae.

Driftwood will release tannic acid, often referred to simply as tannins, which turns the water a tea color. Different wood will release a different amount of tannins. Since these tannins are an acid, they will also lower the PH value of an aquarium. Green water is typically caused by free floating algae.