NAF Five Star Optimum Feed Balancer 3kg. The NAF Five Star Optimum Feed Balancer is designed to compliment and optimise your horse's diet, whether your horse is a happy hacker or performance horse. NAF Five Star Optimum maximises the nutritional value of your horses's daily feed, whilst ensuring the health and efficiency of your horse's digestive system. Optimum also restores and maintains the condition and health of your horse due to it's highly concentrated supplement formula and fantastic sugar free taste. Read more… Optimum is very palatable and is designed to compliment any horse's diet, it can also be fed on it's own when feeding is not necessary. Add to daily feed ration. Do not exceed recommended levels. One 130ml scoop provides approximately 100g. Horses and Ponies Recommended Daily Amounts 600kg+ - 150g per day = 1 ½ scoops per day 400-600kg - 100g per day = 1 scoop per day Ponies - 50g per day = ½ scoop per day A 3kg bag fed to a horse weighing between 400-600kg will last approximately 30 days.