Although the process of making an underwater room is simple as is demonstrated in the following video.. It is actually recommended that you do not try to do this on your own. As the video suggests, this dome was made by trained scuba divers so just enjoy watching how it is done and leave it to the professionals.

This video demonstrates the process and techniques involved in making the dome. The process begins with creating and tying together two circular hoops made of rebar. Next the dome’s structural components are assembled out of nylon string such that they provide a dome like webbing of support when lined with plastic material.

The DIY underwater room in the following video looks like a professional job

Furthermore, as strange as it sounds, there is a very practical use in underwater farming for these types of structures.

What are underwater farms? And how do they work?

Boosting sustainability with underwater crops

Aquaculture has long been used to grow and harvest foodstuffs such as seafood, but several companies are now looking at ways of farming traditional crops such as strawberries and herbs under the sea.

Nemo’s Garden is an underwater farming project consisting of six air-filled plastic pods, or biospheres, anchored at the bottom of the sea off the coast of Noli, Italy.

a picture of the plastic pods used in the Nemo’s Garden

The plastic pods are suspended between 4.5 to 11 metres below the surface. Image: Nemo’s Garden

The plastic pods are suspended at different depths – from between 4.5 to 11 metres – below the water’s surface, and each is equipped with sensors to measure carbon dioxide and oxygen levels; humidity, air temperature and illumination.

Created by diving company Ocean Reef Group in 2012, the project has already yielded everything from tomatoes, to courgettes, beans, mushrooms, lettuce, orchids and aloe vera plants using hydroponic techniques.

This means that plants are grown, without soil, in a nutrient-rich solution to deliver water and minerals to their roots, in a controlled environment.

Underwater farming means no pesticides are needed

Each dome is equipped with seedbeds and a 10-metre spiral tube. Irrigation water and fertilizer are kept in a tank at the lowest part of the spiral, and are delivered to the plants using a pump.

All these functions can be controlled from an above-water control tower, which is also fitted with solar panels that control a fan in each biosphere to reduce humidity on the plants.

Growing crops underwater also benefits the environment by eliminating the need for pesticides as no pests can enter the pods unless they are introduced.

In addition, the biospheres conserve water; seawater in the pods evaporates and then condenses back down to provide the plants with fresh water.

An external water source is only required when initially growing the plants.

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