How to identify resistive moisture sensors and why to never use them in hydroponics
The measuring of media moisture, also known as water-content, is critical to successfully irrigating crops in hydroponics. Badly timed irrigations cause lots of the problems faced by novice and even…
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The best cheap sensor setup for relative humidity in hydroponic automation projects
I have written in the past about humidity in hydroponics, especially how accurately measuring humidity is hard due to problems with the sensors. In my experience during the past 5…
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Calibrating your digital humidity sensors
On a recent post I talked about vapor pressure deficit and its importance in hydroponic culture. To adequately control VPD it’s necessary to accurately measure relative humidity and in order to do…
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Probes for constant immersion in hydroponic nutrient solutions
If you have a hydroponic crop then you probably have to measure and monitor the pH and EC of your nutrient solutions. This means taking probes out of storage, ensuring they…
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