Bottle Biosphere Guide Full Online

The longest-known sealed bottle biosphere was created by David Latimer in England in 1960. He sealed a bottle garden with a single spiderwort plant and opened it only once in 1972 to add water. As of 2025, it is still thriving—over 65 years. Your goal is not perfection; it is stability.

Wash the jar with hot water only – no soap (residue kills invertebrates). Rinse thoroughly.

Use a glass carboy. Fill with aquarium gravel, pond water, Elodea (aquatic plant), one Neocaridina shrimp, and Ramshorn snails. Seal it completely. The shrimp eats algae; the snails eat dead plant matter. Provide LED light for 10 hours/day. bottle biosphere guide full

Slowly pour spring water down the side or through a funnel onto a plate to avoid disturbing substrate. Fill to ¾ full.

Using long tweezers, dig a small hole. Gently place the roots of your Fittonia or Selaginella into the hole and cover with soil. The longest-known sealed bottle biosphere was created by

One of the biggest misconceptions is that a biosphere is "set and forget." While close to it, they require observation.

The "Bursting" Phase: When you first seal the jar, the plants undergo a burst of growth. They will grow rapidly. However, you may see a "bloom" of condensation. Long-Term Care: For the first 7 days, open

Long-Term Care:

For the first 7 days, open the jar for 10 minutes each day. This allows excess CO2 to escape and oxygen to build. After a week, seal it permanently. You should see condensation forming on the glass every morning and disappearing by afternoon. That is the water cycle working.