Dannoo93's Grow Thread
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SxIstew
Well-Known Member
Multi-Nutrient Blockage
In this photograph you can see the diverse symptoms of a multi-nutrient blockage. It arises when excess salts in the substrate bind secondary nutrients such as magnesium, iron, zinc, manganese, calcium, manganese and copper. Usually over-fertilizing with potassium and phosphorus, present in high amounts in fertilizers used for blooming such as the potent 13-14 PK products, causes such a nutrient blockage. The leaves develop a checkered appearance of yellow, brown, and white spots with necrotic edges and sometimes also inter-veinal chlorosis (yellowing). Sometimes weak plants or poor genetics are partly to blame.
Symptoms can spread throughout the plant stunting growth and bud development. In such cases the substrate should be flushed thoroughly. Monitor the EC value of the excess water leaching out of the substrate. Continue flushing until it reaches an acceptable level. In soil this is always a difficult situation since you don't want to complicate matters by water-logging the soil. Flowering plants in the advanced stages of bud development may develop mold if they stand too long in soggy soil. If harvest is near you should simply stop fertilizing and live with the results. Young plants can be flushed more easily and you can also plant them in fresh soil and larger pots to let them recuperate naturally.
Symptoms can spread throughout the plant stunting growth and bud development. In such cases the substrate should be flushed thoroughly. Monitor the EC value of the excess water leaching out of the substrate. Continue flushing until it reaches an acceptable level. In soil this is always a difficult situation since you don't want to complicate matters by water-logging the soil. Flowering plants in the advanced stages of bud development may develop mold if they stand too long in soggy soil. If harvest is near you should simply stop fertilizing and live with the results. Young plants can be flushed more easily and you can also plant them in fresh soil and larger pots to let them recuperate naturally.
thunderrod
Member
Get a ppm meter, test all water you have access to. My water is shit out of the tap, like 300ppm, I have to use distilled water to get my ppm with my nutes right..