Monthly Archives: August 2017

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 and the conductivity scale being expressed in "ppm" units, concentration units which only cause confusion in this area. Today I want to talk about an…
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Controlling aphids in a hydroponic crop. Part 1.

Without a doubt aphids are one of the most common pests affecting crops worldwide. There are both root and leaf aphids, the former which generally live only around plant roots - producing winged offspring only to infest new plants - while the later live generally in plant stems, leaves and - when infestations are bad…
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