Review on Sera 7033 Professional Spirulina 2 200G by Christian Byrd

I have been feeding our koi a higher quality food which is said to intensify the color but still saw the colors fade. I switched them to this brand and couldn't believe the amount of color I see! The fish, which had turned completely white, had black spots again, and even the red color came back. I started feeding them pretty late last year and I'm really looking forward to seeing how much color they get if I feed them all season this year! Not cheap but worth the money in my opinion.