Pebbles

Pebbles are a common hydroponic growing medium that are made of small, rounded stones or pebbles. They are an inert medium, meaning they do not provide any nutrients to the plants. Instead, they are used to provide physical support for the plant roots and allow for good drainage and aeration. Pebbles can be used in a variety of hydroponic systems, including deep water culture and ebb and flow systems. They are easy to clean and reusable, making them a cost-effective option for hydroponic growers.