Dave, The one thing we all have in common in our ponds is the water, and water acts in a very unique way. Generally water sinks the cooler it gets, and thats true up north as well, the catch is that at 39 or 40 degrees the density of water begins to change, the molecules begin to line up for the formation of ice and in the process become less dense. The closer to freezing it gets the closer they are aligned into what will become the chrystalline structure we all call ice. The alignment process is (or was when I was in college) called the 'pseudo chrystalline state' But think about it, if water didn't behave that way, life as we know it might not be here. Ponds would freeze from the bottom up and a lowly pond is where the whole thing probably started. The fact that water behaves this way, allows the ponds to get a stir, mix the nutrient soup up a bit, and bring the life back in the spring. But then again maybe life began in Texas where the ponds don't freeze and that's why you guys get such big ponds!


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