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Earth Child asked: I need to do a controlled experiment where I remove co2 from a closed area.
I can’t gain access to soda lime, but will gardening lime, pickling lime, or something else work?
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The urban gardener asked: Along with water,  hydroponics plant nutrients, Co2 and oxygen, grow lights is the key basic component, required by plants to live. Providing additional light is necessary for indoor gardening. Furthermore, light should resemble the sunlight as much as possible. In order to achieve that goal several types of lights are used: [...]