Why does CNS17 appear to be flaking and sinking to the bottom of my reservoir before it is thoroughly mixed?

When mixing CNS17 into water with a temperature below 68° F (20° C) what appears as a separation may seem to occur. CNS17 works best when mixed with water temperatures ranging between 68°F – 75°F (20°C – 24°C). A quick and easy way to adjust for low water temperatures in the reservoir is to mix the desired dose with an equal amount of warm water before introducing it into a reservoir that contains water under 68° F. Excessive calcium often found in municipal or well water sources may also bind with the phosphorous in CNS17 causing it to precipitate and fall out of solution. For best results use CNS17 with reverse osmosis water.