What is nutrient lockout?

Added by: MedMan Contributed by: Strawdog

Nutrient lockout happens when your plant can not access specific,or all nutrients in the growing medium, this is due to a chemicalreaction within the medium/solution which prevents nutrients from beingabsorbed by the roots.

Aged nutrients can precipitate in the bottle, causing some of theingredients to become solids or even evaporate, the same problem mayalso occur in the growing medium.

Lockout will display the same symptoms as nutrient deficiency; tohelp control this problem dispose of old liquid feed containers as youwould old medicine and use fresh nutrients from a bottle that has beenrecently opened.

The following points can also be responsible for nutrient lockout.
  • PH is incorrect or fluctuates.
  • Single pack hydroponic solutions.
  • Salt build up.
  • A chemical reaction between 2 or more nutrient
    solutions that are mixed together.

For acute deficiency symptoms caused by toxicity and nutrient lockout a first Aid program should be immediately administered.

Step 1)
Leach the plants roots and growing medium using a professionalleaching agent to thoroughly leach away metals, calcium, sodium,chlorides, sulphates and many other compounds, which can build up inthe growing media.

Step 2)
Feed with 1/4 strength high quality complete plant food mix alongwith a high quality vitamin B-1 product such as Superthrive (1 drop pergallon).

Step 3)
Spray a professional stay green formula on the leaves. After 24hrs, spray the leaves with a quality vitamin B-1 product.
Feed at 25% of recommended fertilizer dosage until first signs of growth.

 

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