Your young koi also will grow without growth food (JBL ProPond Growth), but they will grow more slowly and their body will not develop the beautiful shape it does when using this food. It will also help younger fish (mostly two years old) to develop their colours properly when they are 3-5 years old.
This product would be ideal for fish owners who want a high-quality fish food mix with both sticks and flakes, combining the benefits of their feed's nutritional value and smell.