For a pond or lake owner, there is nothing more terrible than having a sudden mass extinction of aquatic life—otherwise known as a Fish Kill.
Fish kills come in many shapes and forms—sometimes big fish die, sometimes small fish die, other times all fish meet the same demise. Some fish kills are limited to a particularly sensitive species of fish, others do not discriminate and affect all fish (including the big game fish you keep fishing for).
A fish kill can be as small as 10-20 fish or as large as 10-20,000—and once fish begin to die, it’s generally too late to remedy the situation. The only way to thwart the fish kill phenomenon is prevention.
Before we can prevent fish kills, we must understand the six possible causes behind them:
