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Recently I read about OceanReef's Nemo's garden, which is growing terrestrial plants underwater inside a dome on the seefloor. I did not found any other company doing it.

If it is that good as it is claimed to be (lack of pests and doseases, stable temperature), why did not the technology go large scale in the past years? There were articles about it from 2015 so quite a few years passed since then.

So why didn't the technology went into large-scale commercial use yet and is there any specific reason why noone else seems doing it?

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    $\begingroup$ I'm voting to close this question as off-topic because this isn't about Earth Science as defined in the help center. You may have better luck at Sustainable Living SE. $\endgroup$ – Spencer Feb 18 '19 at 22:50
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    $\begingroup$ Building and maintaining structures in the ocean is definitely quite risky and expensive. Right now there are many, many aquaculture companies and more coming every day. They are profitable producing many fish, shellfish, and algae. You can check: en.wikipedia.org/wiki/Algaculture and en.wikipedia.org/wiki/Aquaculture $\endgroup$ – arkaia Feb 18 '19 at 23:44
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    $\begingroup$ In it's current form it's not a good fit for any StackExchange site because it's too broad. (1) It invites opinions (2) Their are too many possible reasons (it would require at least several pages to answer) $\endgroup$ – Jan Doggen Feb 19 '19 at 8:14
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    $\begingroup$ Perhaps if you narrowed it to solely focus on asking why this particular method didn't gain larger production, and the question were moved to like an economics board, you might find hope of success. Though many economic and scientific questions can be a bit opinion based, it would need to be framed in a way that pushed people to give evidence for their position. But indeed it really doesn't relate much to geography/geology/meteorology/glaciology/or physical oceanography, which are the core focuses here (basically physical focuses of the Earth system rather than biological) $\endgroup$ – JeopardyTempest Feb 19 '19 at 10:16
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    $\begingroup$ I think your question might be a nice fit for Sustainability SE That site is definitely focused on new technologies, and this site is pretty much focused on Earth processes, and sometimes human impact on Earth processes. It's an interesting question, consider posting it there instead? $\endgroup$ – uhoh Feb 20 '19 at 13:02