The importance of PH Levels for Indoor Growing

Know how your pH levels affect your grow

Know how your pH levels affect your grow and the importance of PH levels for your hydroponic grows.  The scientific term “pH” is an abbreviation that stands for “potential of hydrogen,” which is a measure of the acidity or alkalinity of a solution. Although it is perhaps one of the most overlooked aspects, pH is very important in hydroponics and organic gardening. pH is measured on a scale of 1-14 with 7 being neutral. … Pure water has a balance of hydrogen (H+) and hydroxyl (OH-) ions and is therefore pH neutral (pH 7).

The influence pH has on some certain flowering plants is very important. With soil grows, pH is important to maintain between 5.8 and 6.5, but growing with properly composted soils it creates a little bit of a buffer, allowing less risk of pH problems.

In hydro grows, one wants to maintain pH levels between 5.2 and 6.3. This is a suggested range versus a persistent number, due to the fact that some nutrients become available to the plant at slightly different pH levels. For example, Calcium will be absorbed from a pH of 5.2 and up, if lower the plant will not drink up the calcium in the water. Versus Iron which prefers to be absorbed from a pH level of 5.0-7.25. If pH levels drift outside these ranges certain nutrients and trace elements will “lock out” or no longer be available to the plant,which will can cause deficiency’s with that nutrient, even though the nutrient may be in the water and available for the roots to absorb.

Maintaining these desired pH ranges will allow the plant to take all the desired nutrients that we offer the plant. Different factors in soil and nutrient reservoirs can cause to pH levels to fall or spike and leaving the pH levels unattended for lengthy amounts time could be problematic. So as a beginner starting up a grow, keep a constant eye on that pH level as things change quickly, especially in hydro.

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