Most of the US has suffered through a brutal and long winter (it is snowing outside my window today!), and, as soon as we got a few nice sunny days in the mid 50-60’s, everyone started to get spring fever. For those of us with ponds, we get the more specialized pond fever. You really have to be careful with pond fever, because if you start treating the symptoms too soon, the pond will only suffer. You have to wait until the fever has broken and the temperatures are staying in the 60’s to 70’s.