9/2/2012 – Trying a new Koi food; Shinju White Pearl – Premium All Season. supposedly gives stronger whites and leaves little waste (similar to Hikari I have been using). It sells for $90 (local retail with tax) for an 8lb bag which is a little cheaper than Hikari. The fish seem to eat it quicker than the Hikari. I will report later if I see any improvement in skin.
Update 9/25 – There is a noticeable difference of whites in my Showas and Sanke. Not dramatic and the heads are still beige or silvery on my other fish. I expect cooler weather will bring out other colors so whites may stand out more then too. Waste has been minimal.
Per website (www.shinjukoifood.com):
This Koi food is the perfect recipe for any time of Koi season (above 50 F)
Shinju Koi Food White Pearl will promote beautiful and healthy growth for your Koi .
Fresh wheat germ in White Pearl will not only keep your Koi’s skin lustrous but also very white.
Due to the use of very high quality ingredients, the food is digested and absorbed very efficiently and it leaves very little wastes in your pond and least burden to your filter. This means your water stays clean.
Crude Protein 38% (min)
Calcium 1.5% (min)
Fat 3% (min)
White Fish Meal, Wheat Flour, Defatted Soybean Meal, Defatted Wheat Germ Meal, Dried Brewers Yeast, Mono Dicalcium Phosphate, Vitamin A, Vitamin D3, Vitamin E, Vitamin K, Thiamine Mononitrate, Riboflavin, Pyridoxine Hydrochloride, Niacin, Biotin, Choline Chloride, Vitamin C, Inositol, Folic Acid, Calcium Pantothenat e, Cyanocobalamine, P-Aminobenonic Acid, Manganese Sulfate, Iron Sulfate, Copper Sulfate, Cobalt Sulfate, Zinc Sulfate, Calcium Iodate, Magnesium Sulfate, Disodium Hydrogen Phosphate, Potassium Dihydrogen Phosphate.