I Foud useful to help people conceive a way to create their own mini ecosystem.
Have you ever wanted to create your own little planet? Do you like
aquatic life, but think that aquariums are too much work? If your answer
to either of those two questions is Yes, then you might quite enjoy
owning a miniature closed aquatic ecosystem. All you need is a credit
card, or a clear glass jar, some stuff from a pond, and an appreciation
for things that exist on a small scale. The result will be a
self-sustained miniature world that doesn’t need feeding, filtration, or
anything other than light, from the outside world.
Buy one ready-made
Miniature closed ecosystems were first developed in the early 80’s by
NASA , in a study aimed at finding ways of supporting human life in
outer space. That technology was licensed, and resulted in a consumer
product known as the EcoSphere(R),
which is still available to this day. An EcoSphere(R) is a glass globe
with sea water, bacteria, gravel, a piece of coral, algae, several
algae-eating shrimp and an air pocket all sealed inside. The algae
converts light and carbon dioxide into oxygen, the shrimp breathe the
oxygen and convert it back into carbon dioxide, the bacteria break down
the shrimps’ waste, and the whole thing can keep itself going for quite a
long time. “We regularly receive letters from customers stating their
shrimp lived for up to 20 years enclosed” company VP Dan Harmony told
Gizmag. “We hear this often from many customers, that their EcoSphere is
five, eight, or even ten years old.”
Make your own
If you want a closed ecosystem that you know is done right, then an
EcoSphere(R) is definitely the way to go. It can be quite fun and
fascinating, however, to make your own freshwater version. There are
numerous examples on the Internet, but probably the definitive how-to
guide is a video posted by Make Magazine.
What it boils down to is, you’re collecting water, sand/bottom debris
and plants from a pond, sealing them in a jar with some air space at
the top, then leaving everything in indirect sunlight.
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