I have tried every food available in pet stores and on the internet and never found a better diet than this line of foods. The fish don't hesitate to eat it and the results are alarming. I Saw an approximately %50 increase in color. I also chart my chemical levels and nitrate waste accumulation has slowed since I switched. Anyone who has made the investment of time, effort and money to own discus is cheating themselves when they spend $5 less on food. My fish look like discus in the magazines! (I saw benefit in blue and red discus colors)