Tom G. - every pond owner should be scared during a fish kill. A large fish kill is serious business and cause for concern. The results of lots of work, time, effort and often money are floating to the surface belly up.
It probably does not make much difference in the long run weather you use well water or pond water to spray into the air for adding oxygen to the already low DO of pond water during a fish kill. Both types of water have low or no DO to begin the re-oxygenation process. Pond water may have a slightly higher DO to begin the process. You ought to measure the DO of you well water to know what the baseline it has for DO.
Is anyone working of the task of looking up how much oxygen is added to a specific volume of water from the bubbling action of a diffuser? Curious minds want to know.
