Paul Holowko, OsmoBot CTO and cofounder, spends his weeks building OsmoBot - our hydroponic/aquaculture monitor - and his weekends working on loftier goals: growing food in hermetically sealed environments.
You are looking at Paul's 5th biosphere. His first and second started by imitating a California bog. His third introduced a ocean water into the equation as his carbon dioxide levels were too high in his first two. His fourth further improved on the advances of the third and now his fifth is attempting to truly imitate the cycles on earth in as many ways as possible.
The keys to creating a successful biosphere, Paul has learned, are: microbiology and monitoring. Because his first biospheres did not fully mimic the cycles in nature, his micro-biome went monoculture very quickly. So he started closely monitoring key parameters like oxygen, CO2, temperature, and humidity (sound familiar?) to get a better sense of what was going on and what tweaks he needed to make. The inspiration to add a marine element was huge and now he is truly trying to imitate earth... in his garage. An impressive weekend endeavor.
While this is only tangentially related to OsmoBot, we think it's super cool. Feel free to comment below with thoughts and feedback!