Clay Pebbles for Hydroponic Gardening

Clay Pebbles for Hydroponic Gardening

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Credit: Ted Kinsman/SCIENCE PHOTO LIBRARY

Caption: Macro photograph of expanded clay aggregate used for hydroponic (soilless) gardening. The largest is 1 cm in diameter. Expanded clay aggregate is a lightweight ceramic manufactured in a rotating kiln. This material has a very high surface area due to all the holes and cracks. It is able to collect hydroponic chemicals and air to nurture the roots of a plant, making it an excellent delivery method for nutrients. Plants can grow at maximum rates using expanded clay aggregate. A typical hydroponic system will wet the aggregate several times a day.

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Keywords: aggregate, ceramic, clay, clay aggregate, clay pebbles, expanded clay, expanded clay aggregate, expanded clay pebbles, gardening, hydroculture, hydroponic, macro, macro photo, nodules, science, small, spheres, tiny

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