Why TDS is NOT equal to Total Dissolved Solids in hydroponics
Electrical conductivity is a very commonly used measurement in hydroponics, yet a very poorly understood one. I have written several posts about conductivity in the past (1,2,3) and today I…
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Nutrient solution conductivity estimates in Hydrobuddy
People who use Hydrobuddy can be confused by its conductivity estimates, especially because its values can often mismatch the readings of conductivity meters in real life. This confusion can stem…
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Creating a robust pH/EC monitor for hydroponics using Atlas probes and an Arduino
A few months ago I talked about how you could build a simple sensor station for your hydroponic projects using an arduino (see here). However this small project used the…
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Comparing the conductivity of two different solutions
Conductivity is perhaps the most misunderstood and erroneously used measurement in hydroponic culture. This has a lot to do with conductivity also being called a “totally dissolved solid” (TDS) measurement…
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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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How to prepare your own solutions for EC meter calibration
On a recent post I talked about how you can prepare your own solutions for the calibration of your pH meter. However hydroponic growers not only need to calibrate their pH…
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