How to use Air Stones in Hydroponics | Hydroponics Systems
Air stones keep the nutrient solution aerated, delivering needed oxygen to the plants' roots. They work best in a deep water culture, where the plants' roots dangle into the nutrient reservoir. Since the water does not circulate in this type of hydroponics systems, it will become stagnant if it is not aerated. Air stones are available at garden centers and pet stores that sell aquarium supplies.
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