Hydroponic nutrient solution is the most important component of a hydroponic system for making plants grow. Nutrient solution contains all the food your plants need in the absence of soil. When a nutrient solution is mixed properly, little must be done to keep the plants healthy. Over time, the nutrients and water in the solution get used up by the plants, meaning there are not enough nutrients to make the plant grow, or the nutrients are concentrated in the remaining bath. Knowing how and when to change your solution is essential to healthy plants.
Add nutrient solution to your water according to the instructions on the nutrient solution bottle.
Stir the nutrient solution into the water, making sure it is mixed thoroughly.
Measure the total dissolved salts (TDS) and the electrical conductivity (EC) of your nutrient solution, using your TDS/EC meter. This will measure the exact amount of nutrients in the water, and whether it is correct for your plant.
Test your nutrient solution, using a pH/ED/TDS meter. The pH must be between 5.8 and 6.8.
Cover the nutrient solution so that light does not get into it. This will keep the water from evaporating quickly.