The plants subtract from the nutrient solution fertilizers and water simultaneously, but not necessarily to the same extent.

In a hot climate such as the plants tend to "drink" more, and together with the high evaporation rate makes this the concentration of nutrients is too high.
To maintain stable and under control of the equilibrium solution is necessary to monitor the EC or electrical conductivity.

This value is the only way we can determine exactly how many nutrients are still present in the water. A presence too high will damage the plants, while too little will track deficiencies and development slowed.
To detect the EC using a special instrument that indicates the amount of salts (total, so no distinctions) dissolved. There are several models of portable or fixed gauges with probes of different price ranges.

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It 's well known that it is absolutely necessary to maintain certain environmental factors under control in indoor growing.
Let's see how to best manage to get outstanding results and get the most out of our cultivation.

During the growth phase it is good that the hours of light daily are 18-20. At the start of flowering must move rapidly to about 12 hours, to simulate the arrival of autumn.
After about three weeks of flowering you can add a quarter of an hour of daylight every 2 days to get to 13 hours of light at the end of the third week of flowering. This, though in nature the daytime should be decreasing and not increasing, it's a little trick that will speed up the time of collection.

It 's important not to overdo it, however, not exceed 13 hours, otherwise the stress of the plant and a sure worsening of her general condition.

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Some time ago we had written in collaboration with the staff of Italgrow a summary table of the main parameters to consider when growing indoors.
Providing a number of sections (Light, Air, Water, Nutrients, Hydroponic Substrates and) we represent to popular demand the simplest guides for beginner and beyond, can provide a first overview and a series of answers to common questions that should have brought my vacuum cleaner? What is a speed governor? At what distance from the lamps must be plants? How do I manage pH and EC? When should I use a root stimulator? What is the difference in practice between the various substrates and which format is suitable for my situation?

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The electrical conductivity (EC) is a factor that greatly influences the growth of plants cultivated outside soil.

Most of the nutrients on the market has a formula that allows solutions with EC rather low (less than 3.0 dS / m).
Following tables with dosages on the label and using quality products, you're headed in the preparation of nutrient solution.
The real problems arise such as when very hot and dry the water evaporates in large quantities, leaving the roots immersed in a concentrated fertilizer and salts, with an EC suddenly jumped to the stars. Read more ...

Christian Cantelli

The electrical conductivity or EC, English acronym equivalent electric conductivity, is a key factor for proper development of plants in a hydroponic system automated.

The electrical conductivity (EC) of nutrient solution to water is expressed in siemens per centimeter (s / cm), millisimens per centimeter (ms / cm) or microsimens per centimeter (S / cm). Read more ...