Hydroculture
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Hydroculture is a type of hydroponics in which plants are grown in a media that allows the distribution of water and nutrients through capillary action.
Clay aggregate such as LECA and Hydroton can be used to anchor plants when growing with hydroponics.
Advantages include ease of maintenance as watering and feeding involve just topping up the reservoir of growing solution. Soil borne pests don't affect plants grown using hydroculture.