Rate your koi food: from 1-10, 10 being the best. Since we are the consumers we can do this.
Wheatgerm:
1. Hai Feng Growth.
2. Ogata Wheatgerm.
3. Hikari Wheatgerm.
4. MediCarp.
5. Aqua Master Growth.
This by no means says using these foods will make your fish better, but understanding the whole process of food, water conditions and pond size does.
