Fill the growing bed area with 12 inches of expanded clay, lava rock, gravel or pebbles for growing. Hydroponics requires non-soil foundations while aquaponics requires inorganic matter that doesn't break down or disrupt the system's pH. Non-soil foundations eliminate the opportunity for weeds or pests in the garden.
Plant poppy seeds at every four inches in the row, with two to four inches between rows. Push the seeds one inch into the growing foundation for security.
Put the system in a site with partial to full sun or full indirect sun to protect the fish and give poppies the light they need for growth.
Turn the aquaponics system on and set the timer for 15 minutes on and 45 minutes off. This flood-and-drain process allows for best nutrient transfer for both poppies and fish.