Essentials EC meter

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Essentials EC Meter
Essentials EC Meter are truly the most rugged glass type pH & CF/EC testers around. They are drop-shock resistant, temperature compensating and easy to calibrate. The units are also water resistant, allowing easy washing. Even if the meter is accidentally dropped into the water, it will remain afloat so as to enable immediate retrieval without damaging the electronics. Essentials EC Meter cost less per sample than competing high quality testers. Meters have about 1-3 year lifespan depending on rate of sampling. Essentials EC Meter have an energy saving feature that shuts off the tester when it is not in use. To ensure accurate reading at all times, the unit displays a low battery symbol to alert the user to change batteries before it degrades the accuracy of important readings.
The function of a nutrient solution is to supply the plant roots with water, dissolved oxygen and essential mineral elements in soluble form. The success of a hydroponic system depends heavily on the correct control of this nutrient solution in terms of strength. Each plant has its preferred solution concentration to facilitate the absorption process to the roots. Choosing the correct strength at each growing phase of the plant will result in optimum growth. We most commonly measure a nutrient’s concentration by measuring in EC, CF and ppm (parts per million) values. Nutrient solutions must be monitored as frequently as possible. The warmer your grow room the more water the plant will use and transpire, thus increasing the nutrient strength. As water evaporates or is used by your plants transpiring, the salt level will increase meaning your EC/CF value will rise. High EC/CF values, mean a high nutrient concentration which if too high can be toxic to the root zone and will cause poor and stunted growth. At extreme levels, too high a level will cause actual death in the root zone. When planting out you start with a weak solution then increase nutrient EC/CF levels gradually over time rather than suddenly and all at once.