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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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…
Read MoreGrowing a Hydroponic Garden Without a pH or EC meter
So you have decided you want to start a hydroponic garden but you do not want to use a pH or an EC meter. It is fairly common for people…
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