Laguna Plant Grow - 16 Ounces Iron enriched plant fertilizer helps keep plants strong and vigorous Phosphate and nitrate free Chelated - provides maximum nutrients to plants Ideal for all pond plants, including floating varieties 16 ounce bottle treats 2500 gallons of pond water Iron enriched plant fertilizer helps keep plants strong and vigorous Chelated - provides maximum nutrients to plants Ideal for all pond plants, including floating varieties 16 ounce bottle treats 2500 gallons of pond water