What are air stones for hydroponics? For hydroponic systems, such as Deep Water Culture (DWC), aeration must be provided. What does an air stone do in hydroponics? The air stone, in conjunction with an air pump, is used to produce bubbles to oxygenate the plants.
It is important to know how much air is needed for the system to have adequate oxygen levels. In general, it is recommended to pump one liter of air per minute per one gallon of water.
What are the best air stones for hydroponics? If you are looking for air stones for your DWC hydroponic system, here are best 3 options. Remember, soak the stone according to the manufacturer’s instructions and clean it periodically with a bristle brush.
Best Air Stones for Hydroponics: Hydrofarm
These air stones have a micro-pore design that generates a good circulation of nutrients. Its dimension is 2 inches long by 2 inches in diameter (5 cm x 5 cm). Its weight is 4.8 oz (136 g).
- Sturdy and solid stones.
- Versatile for various sizes and capacities.
- Fine bubble production.
- Good price.
Connector nozzle is too small.
Best Hydroponic air stone: Pawfly
This model is characterized by a jet volume: 1.3 L/min. Its size is 0.8 inches deep (2 cm) by 1.2 inches (3 cm) high. Its net weight is 5 oz (178 g). Also, an air pump of more than 2W is needed for the stone.
- Economical price.
- Easy installation.
Production of relatively large bubbles.
Best Air Stone for Hydroponics: Pawfly Disc Bubble
The current hydroponic air stone has a jet volume: 28 L/min to increase oxygen solubility in the tank. In addition, it measures 8 inches (20.3 cm) deep x 1 inch (2.54 cm) high. It also weighs 2.9 pounds (1.3 kg).
Additionally, it is important that you soak the stone for 6 hours before use. Also, an air pump of more than 15W is recommended.
- Made of high quality non-toxic mineral material.
- Good bubble volume.
- Plastic suction cups tend to detach.