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Using too many nutrients can create a nutrient burn on the leaves, primarily on the [[Anatomy_of_Cannabis#Apex|apex]]
=== Nutrient lockout===
Nutrient lockout occurs when the pH is too high or too low for the plant to properly absorb nutrients. This leads to a deficit of necessary nutrients for growth and/or survival. A nutrient lockout can also occur when the grow medium accumulates too much salt or other nutrients.
==Methods of Nutrient delivery ==
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