Hydroponic or hydroponic/aeroponic hybrid systems use hydroponic foggers to feed nutrients to plant roots via a nutrient fog. A hydroponic fogger differs from an aeroponic mister since the fogger produces fog ultrasonically and it doesn’t atomize the solution.
A hydroponic fogger sits below the water level producing fog, thereby raising the humidity in the rooting zone. If the water particles produced by this fog are small enough – usually between 5-15 micrometers this allows for increased nutrient uptake. The oxygen-rich mist combined with high humidity and small water particles results in accelerated growth.
Reduced need for water and nutrients
No growing mediums required
Increase in the overall root surface area due to increased growth of small root hairs
Reduces the risk of harming the plants with excess nutrients
Use only products that do not contain live microbial cultures as hydroponic foggers can sterilize live cultures.
You need to clean the disks occasionally. You can use white vinegar for this. Simply place the Hydroponic Fogger in a glass of white vinegar and run the device for a minute or so and the mineral deposits from the nutrients will shed off.
Replace the Teflon disks every 6 months to a year as the discs wear and the mist output decreases.
Foggers can increase the temperature of your nutrient solution so monitor the temperature of the solution. If you provide a continuous flow of solution, such as the ebb and flow system, it can help keep temperatures down.
You should consider a hybrid system that includes an ultrasonic fogger used in conjunction with a solution (ebb and flow nutrient film technique, or deep water culture, etc.) as hydroponic foggers can sometimes fail. The nutrient solution will feed the bottom half of the roots and the upper half of the roots are fed by the fog produced by the hydroponic fogger. Should the fogger fail there is still a system in place to feed the roots nutrients and water. This also leads to maximum oxygenation and access to an unlimited supply of nutrient solution at the bottom of the tray.
The nebulizers on hydroponic foggers can be damaged quickly if water levels drop too low.
Hydroponic Guide Sections
To learn more about other aspects of hydroponic gardening, see the following sections of our guide.