Weed plants with too many nutrients, improper pH levels, or other stresses can result in a nutrient imbalance or lockout. Nutrient lockout results from a buildup of nutrients or salt in the soil, preventing absorption of new nutrients.
Flushing plants will remove this excess buildup and help restore the soil’s pH level. This will allow plants to resume absorbing nutrients to grow at a healthy, successful rate.
To perform this type of flush, excessively water your plants with water at a pH level between 6.0-6.8 for soil and 5.5-6.5 for hydroponics. Fully saturate your pots, and repeat 15 minutes later. The flush should clear any blockage and make room for new nutrients.