We are frequently asked how this small ecosystem can survive in an airtight space without outside influences? Do you really have to do nothing, neither water nor fertilize? How does this little world work under glass?



Photosynthesis is a chemical process that takes place during the day and enables plants to produce CO2, sugar and oxygen under the influence of light and water. This process is reversed at night and photosynthesis comes to a standstill due to the lack of light. The plant absorbs the available oxygen and releases CO2 back into the air. The water cycle starts automatically due to the slight influence on the terrarium.


Plants need light, water and nutrients to live. Therefore, our small ecosystem needs a place as bright as possible. Avoid direct sunlight, as this heats up the terrarium too much and can literally burn the plants. The inside temperature rises, the water evaporates and fogs on the cooler side of the glass. In addition, the plants release water in gaseous form when breathing. When enough water has condensed on the glass walls, it runs down and can be taken up again by the roots and the substrate. The ideal water cycle has been created.

Of course, each of our small ecosystems is unique. Depending on the plants, substrate, location or size of the glass, you may not have to give additional water for months or even years.


You can recognize a lack of water by the fact that there is no more condensation on the glass or the moss looks dry.


If you need to water, it's best to use rainwater or decalcified drinking water, as lime increases the pH value of the soil, making it alkaline. Most of our plants prefer a slightly acidic soil and since lime also settles on the leaves and can suffocate them. Mineral water also does it, of course without carbon dioxide.


Depending on the size of the ecosystem, we recommend a few bursts from a commercially available spray bottle.


Further care instructions .