Final answer:
The first step is to plant the seeds in soil. Transfer seedlings to hydroponic system with rock wool. Water the clay pebbles.
Step-by-step explanation:
The first step to start planting strawberries using the provided materials is to plant the seeds in soil.
Strawberry plants have stolons, which are horizontal stems that run over the ground surface. These stolons can take root and form new plants. To start growing strawberries, you need to plant the seeds in soil so that they can germinate and grow into seedlings.
Once the seedlings have developed, you can then transfer them to the hydroponic system with rock wool to provide optimal growing conditions. The rock wool acts as a growing medium for the plants.
After setting up the hydroponic system, you should water the clay pebbles, which provide stability to the plants and prevent them from falling over.
Finally, while lights are important for providing the necessary light energy for photosynthesis, measuring the pH of the lights is not necessary for planting strawberries.