A guide to different pH up options in hydroponics
When is pH up needed? The control of pH in hydroponics is critical. Most commonly, we need to decrease the pH of our solutions as most nutrients will initially be…
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Creating a pH/EC wireless sensing station for MyCodo using an Arduino MKR Wifi 1010
There are multiple open-source projects available online for the creation of pH/EC sensing stations for hydroponics. However, all of the ones I have found use a single Arduino or Raspberry…
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Nutrient availability and pH: Are those charts really accurate?
When growing plants, either in soil or hydroponically, we are interested in giving them the best possible conditions for nutrient absorption. If you have ever searched for information about plant…
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How much Phosphorous are you adding to your solution to adjust pH?
Phosphoric acid is one of the most commonly used pH down agents in hydroponics. This is because phosphoric acid is available in high purity, is easier to handle and has…
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How to prepare pH 4 and 7 buffers from scratch without using a pH meter
I wrote a post in the past about how you could prepare pH buffers in order to calibrate your pH meter if you happen to already have a calibrated pH…
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Understanding the carbonic acid/bicarbonate buffer in hydroponics
I have written several articles before about pH and it’s importance in hydroponic culture (1, 2, 3, 4). However I have yet to write a detailed explanation of one of…
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A guide to different pH down options in hydroponics
The control of pH in hydroponic nutrient solutions is important. Plants will tend to increase the pH of solutions in most cases – as nitrate uptake tends to dominate over…
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Controlling pH in hydroponics using only electricity
The ability of plants to assimilate nutrients changes as a function of pH. This makes maintaining the pH of nutrient solutions within an acceptable range – most commonly 5.8 to…
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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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Five dos and don’ts for automated pH control in hydroponics
The pH is one of the most important variables to control in hydroponic culture as it plays a key role in the availability of different ions and their absorption dynamics.…
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