That is not snow, but lime, as the pH of my media came back an acidic 5.8! Since I wanted to move the pH one entire point in about 12 days, I searched out hydrated lime, which is stronger than your typical dolomitic or calcitic lime. It is also more expensive and of greater hazard to the applicator, so I suggest you only use it in special applications, which this situation fit perfectly.
Picture taken on November 25, 2012
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