Hermetospheres

Experiences with plant life in closed glass containers

Category: Materials & Conditions

  • Light conditions

    Light conditions

    This post is last of a three-part series discussing water conditions, nutrient conditions, and light conditions in hermetospheres. When I started my first hermetospheres, I intuitively felt that the place chosen within my apartment did not provide enough natural light for plant growth. I therefore installed LED grow lights, first one, then a second. Now,…

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  • Nutrient conditions

    Nutrient conditions

    This post is part two of a three-part series discussing water conditions, nutrient conditions, and light conditions in hermetospheres. In a closed system of plant life, water, carbon and nutrients are subject to cycles. In the case of nutrients, dying plant tissue is beeing decomposed by bacteria and fungi, and the nutrients it contains are…

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  • Water conditions

    Water conditions

    With certain limitations, we consider hermetospheres as closed systems. To get closer to the goal of long-term stability of this system, it is important to understand the conditions and processes within the system. They depend on the initial situation and on external factors such as temperature or light. With this in mind, this article begins a…

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  • Acclimation (1): Ficus punctata

    Acclimation (1): Ficus punctata

    Closed glass containers inevitably create extreme conditions for plant growth. This is especially the case for relative humidity, which can be assumed to be close to 100% at all times. Most tropical plants can deal with this, and hardly ever I could observe obvious changes from “normal” greenhouse conditions, where my plants usually come from,…

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