We only provide supplements when the blood chems suggest the need. A well founded diet that includes fresh Veggies, a healthy wide spectrum of seeds, grains, nuts, and high quality pellet as a supplement will provide everything a Parrot needs.
It is important to become knowledgeable regarding the natural range of your Parrot and the availability of natural dry foods and wet foods as a means of creating a healthy diet for your Parrot. After all, each species will have minor to major differences.
Remember that Eclectus require a highly specialized diet and knowing their specific diet needs will ensure the health of yours. Please search in the Eclectus Forum regarding diet and health needs.