Matters needing attention in the preparation of Flower nutrient solution

1. Glass, enamel, ceramic and other utensils for preparing nutrient solution, do not use metal containers.

2. In the preparation, various elements should be dissolved in a small amount of warm water of 50 ℃, and then poured into the water, stirred while pouring, and fully mixed.

3. When using tap water to prepare nutrient solution, a small amount of humic acid compounds should be added to deal with chlorides and sulfides in water; in rural areas, river water or lake water should be used to prepare directly.

4. Adjust the pH of the nutrient solution.

If the pH value of the water used is neutral or slightly acidic, the pH value of the nutrient solution is similar to that of the water source, it does not need to be adjusted; but if the tap water is alkaline determined by pH test paper, phosphoric acid is used to neutralize it; if it is strongly acidic, it is neutralized by dropping sodium hydroxide to make it neutral or slightly acidic.