FILL CONTAINER WITH WATER

Fill a clean container, such as a bucket, with a measured quantity of water. If you are using tap water, it is recommended that you leave it to stand for up to 24 hours, so that it can settle to room temperature. This will also allow some of the chlorine in the water to evaporate off.

ADDING NUTRIENT CONCENTRATE

Test the conductivity of the water in the container, and gradually add the nutrient concentrate until the desired conductivity level is reached.

If you are using two part nutrient concentrates, both parts should be added equally. However, they should not be mixed before being added, as this will result in nutrients precipitating out of the solution.

Add a measured amount of part A and then an equal amount of part B, test the conductivity and continue adding equal parts of A and B as necessary.

ADDING NUTRIENT ADDITIVES

If you are using any nutrient additives then they should be added at this stage.

MEASURING AND CORRECTING PH

You will now need to measure and, if necessary, correct the pH level of the nutrient solution. This is explained fully in the section on basic nutrient solutions