Diagram of the <a href="https://en.wikipedia.org/wiki/nitrogen_cycle" class="extiw" title="en:nitrogen cycle">nitrogen cycle</a> in an <a href="https://en.wikipedia.org/wiki/aquarium" class="extiw" title="en:aquarium">aquarium</a>.
Own work, drawn in <a href="https://tr.wikipedia.org/wiki/Sodipodi" class="extiw" title="tr:Sodipodi">Sodipodi</a> and <a href="https://tr.wikipedia.org/wiki/Inkscape" class="extiw" title="tr:Inkscape">Inkscape</a> by <a href="//commons.wikimedia.org/wiki/User:Ilmari_Karonen" title="User:Ilmari Karonen">Ilmari Karonen</a>.
2014-04-27 15:30:14
<a href="//commons.wikimedia.org/wiki/File:Aquarium_Nitrogen_Cycle.svg" title="File:Aquarium Nitrogen Cycle.svg">File:Aquarium Nitrogen Cycle.svg</a>