Is Alkaline Water Good for Cannabis Plants?

When it comes to growing cannabis plants, every decision can have a significant impact on plant growth and yields. One of the questions that cannabis growers often ask is whether using alkaline water is good for cannabis plants. In this article, we will explore the benefits and drawbacks of using alkaline water for cannabis plants.

What is Alkaline Water?

Alkaline water is water that has a pH level greater than 7. The pH scale runs from 0 to 14, with 7 being neutral. A pH level greater than 7 is considered alkaline, while a pH level less than 7 is acidic. Alkaline water is believed to have several health benefits, such as hydration, improved digestion, and increased energy levels.

The Effects of Alkaline Water on Cannabis Plants

While alkaline water may be beneficial for human health, it may not be the best choice for cannabis plants. Cannabis plants require a specific pH level to grow and thrive, with a range between 6.0 and 7.0 being ideal. Alkaline water, with a pH level greater than 7, can raise the pH level of the soil or hydroponic solution, which can disrupt the nutrient uptake of the plants.

When the pH level of the soil or hydroponic solution is too high, cannabis plants may experience nutrient deficiencies or toxicities, which can result in stunted growth, wilting, leaf curling, and decreased yields. Alkaline water can also affect the microbial balance in the soil or hydroponic solution, which can lead to pathogen growth and disease.

How to Test the pH Level of Water

Testing the pH level of water is important for cannabis growers to ensure that the water they are using is within the optimal pH range for their plants. The pH level of water can be tested using a pH meter or pH strips. A pH meter provides a more accurate reading than pH strips, but it is also more costly.

To test the pH level of water using pH strips, simply dip the strip into the water and compare the color of the strip to the color chart provided with the strips. Most pH strips have a range between 0 and 14, with different colors indicating different pH levels. Ensure that the pH level of the water falls within the 6.0 to 7.0 range for optimal growth of cannabis plants.

The Bottom Line

While alkaline water may have some health benefits for humans, it is not recommended for cannabis plants. Cannabis plants require a specific pH level to grow and thrive, with a range between 6.0 and 7.0 being ideal. Alkaline water, with a pH level greater than 7, can disrupt the nutrient uptake of cannabis plants, causing nutrient deficiencies or toxicities and affecting the microbial balance in the soil or hydroponic solution. Always test the pH level of water before using it to water cannabis plants to ensure optimal growth and yields.