Nov 09, 2020 · Think of algae as tiny plants that live in wet places. Just like other plants, algae need sunlight and nutrients like phosphate, iron and calcium. There are two common “types” of pond algae. There’s single-cell and stringy filamentous forms. The single-celled algae cause the green “pea soup” blooms that cloud the water.
Oct 30, 2009 · Wavelengths less than 400 nm (nanometers) and above 700 nm are generally not usable by plants and cyanobacteria. Most pigments don't absorb ultraviolet light well, and if the wavelength is too low they can become damaging to plant cells.