Fortunately this accident left no permanent damage either. We now have a rule in our hatchery to never mix chemicals unless we have tested the mixture and given approval to mix those specific chemicals. Thanks again for your email. Be Extremely Careful with Pesticides near Ponds. If you spray pesticides in your garden, be sure none of the spray gets into your pond's water.
Fish are extremely sensitive to some garden sprays.
Even a small amount of pesticide settling onto the water's surface can cause problems. To the Top of this Page. 10. Wash Your Hands. Hand cream, soap, floor cleaners, car wax, and all other chemicals should not get into your fish's water. Before you put you hands in your fish's water or touch anything that will come into contact with your fish's water, wash your hands.