Why pH of Water is Important for Feeding Cannabis

The pH level of the water you use for feeding your cannabis plants is crucial for their health and growth. Here's why maintaining the correct pH is essential:

Importance of pH in Water

Nutrient Absorption:

• Optimal pH Levels: Different nutrients are absorbed by cannabis plants at different pH levels. If the pH is too high or too low, your plants may not be able to absorb essential nutrients, leading to deficiencies and poor growth.
• Preventing Nutrient Lockout: Maintaining the correct pH ensures that nutrients remain available to the plants. When pH levels are off, nutrients can become locked out, meaning the plants can't take them up, even if they are present in the soil or growing medium.

Recommended pH Levels for Different Media

Soil:

• Optimal pH: 6.5
• Why? Soil naturally buffers pH changes, but maintaining a pH of 6.5 ensures that a wide range of nutrients are available for absorption.

Peat-Based Media (e.g., PROMIX HP):

• Optimal pH Range: 6.0 - 6.4
• Why? Peat-based media like PROMIX HP have specific nutrient availability at this pH range. It ensures that your plants can access the nutrients they need without risk of lockout.

Coco Coir:

• Optimal pH Range: 5.8 - 6.2
• Why? Coco coir is a neutral medium and does not buffer pH changes as soil does. Keeping the pH within this range helps ensure that essential nutrients like calcium and magnesium remain available.

How to pH Your Water

1. Test the pH: Use a digital pH meter or pH test strips to check the current pH level of your water.
2. Adjust the pH: Use pH up or pH down solutions to adjust the pH to the desired level.
3. Mix Thoroughly: After adding the pH adjusting solution, mix the water thoroughly and test the pH again to ensure it is within the optimal range.