# Fogponics

> Fogponics is a form of aeroponics that bathes roots in a fog of nutrient solution made by ultrasonic foggers, with droplets far smaller than spray systems.

- Canonical: https://genetixbay.com/knowledge/glossary/fogponics.html
- Also written: fog-ponics, fogponic, ultrasonic aeroponics, fogger system, mist culture
- Glossary category: Systems and media · Evidence: Contested
- Status: Draft: awaiting expert review · Updated: 2026-10-31
- Licence: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/), attribute "GenetixBay cannabis glossary"

Fogponics uses ultrasonic transducers ([foggers](https://genetixbay.com/knowledge/glossary/humidifier.md)) to turn nutrient solution into a cold fog of very fine droplets, typically under about 10 µm, which fills a closed root chamber. In theory, tiny droplets give roots both oxygen and nutrients with almost no water barrier.

## In practice

In practice, fogponics is mostly used for [cloning](https://genetixbay.com/knowledge/glossary/cloning.md) and small experimental systems. Common problems: transducers heat the solution, salts build up and crust on the discs, units wear out and need regular replacement, and fog alone may deliver [too little water](https://genetixbay.com/knowledge/glossary/underwatering.md) and nutrients to large flowering plants. Many builds combine fog with a spray or a shallow pool.

Evidence for full-cycle cannabis production in fogponics is limited to grower reports; treat it as experimental.

## Don't confuse with

- **HPA**: pressure-driven mist with larger droplets.
- **Humidifier fog**: the same hardware, used for air humidity, not root feeding.

## Related terms

[Aeroponics](https://genetixbay.com/knowledge/glossary/aeroponics.md), [HPA](https://genetixbay.com/knowledge/glossary/hpa.md), [Reservoir](https://genetixbay.com/knowledge/glossary/reservoir.md), [Root zone](https://genetixbay.com/knowledge/glossary/root-zone.md)

## Read more

- [Fogponics: ultrasonic fog for roots (a supplement, not a system)](https://genetixbay.com/knowledge/systems/fogponics.md)

## Sources

1. Lakhiar IA, Gao J, Syed TN, Chandio FA, Buttar NA, 2018. Modern plant cultivation technologies in agriculture under controlled environment: a review on aeroponics. Journal of Plant Interactions 13(1):338–352. https://doi.org/10.1080/17429145.2018.1472308