Spureal 250 ml saltwater trace elements, Aqualine Buschke. Spureal replenishes destroyed trace elements and prevents deficiencies. Spureal is optimally absorbed by the organism due to its special solution form. Spureal contains all elements required according to the current state of knowledge for a heathey and well-balanced living environment in salt water. Spureal promotes skeleton formation and prevents all froms of degeneration. 250 ml for 650 gallons.