Products and services using Closed ecological systems are generally available around 2022
Grader A: miss
Grader B: miss
agrees with A, without seeing its verdict
Audit: confirmed
in the fixed audit sample (D11)
Published: miss
Grader A: miss
The poster itself notes small systems already exist (sealed aquarium ecospheres are sold as novelties) and makes the claim about scaling. Human-supporting closed systems remain research programmes (Biosphere 2, BIOS-3, MELiSSA); none has supported life for long periods, and none is sold.
Test: D37 Horizons: scaled closed life-support ecosystems buyable or deployable outside research by 2024 for a hit; miss if not available by 2027.
Grader B: miss
Only small sealed ecospheres (sold since the 1980s, which the poster already acknowledges) exist. Life-support-scale systems remain research (ESA MELiSSA pilot plant). None on sale.
Test: A life-supporting closed ecosystem product beyond small scale could be bought by 2024; partial if limited or by 2025-2027.