Signed in as:
filler@godaddy.com
7.1 The Deficit Detective: Nutrient Deficiencies & pH Issues
A plant needs a specific balance of nutrients to thrive. When it doesn't get what it needs, it will show you through visual symptoms.
Deficiencies and Other Issues
Nutrient Deficiencies:
- Nitrogen (N): The most common deficiency. Leaves will turn a pale yellow, starting from the lower leaves and working their way up.
- Phosphorus (P): Leaves will turn a dark, dull green or purple and may have brown spots.
- Potassium (K): Leaf edges and tips will turn yellow and brown, looking like they have been scorched.
The pH Problem:
- As covered in Module 4, pH is critical for nutrient absorption. If your pH is off, your plant can be surrounded by nutrients but unable to absorb them, leading to what's known as a "nutrient lockout." This is a common cause of deficiencies.
- Solution: The first step when you see a deficiency is always to check the pH of your water and the pH of the runoff from your plant.
The Importance of pH Consistency
Consistency is more important than perfection when it comes to pH.
Studies have shown that a consistently incorrect pH is better than an inconsistent pH that fluctuates wildly.
Your tap water can change in pH and EC/PPM throughout the year due to seasonal changes and city water treatments. This is why you must check the pH and EC of your nutrient solution before every feeding to prevent unexpected problems and ensure your plants are getting what they need.
Copyright © 2026 Endless Genetics - All Rights Reserved.
This website uses cookies.
We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.