Precautions! Pond HealthGuard™ is safe for most fish under most circumstances. Since use of any treatment is not without risk, it should not be used carelessly. For prophylactic purpose, use 1-4 dose. If many fish are to be treated, first check for susceptibility to stress with a few fish. If fish show stress (surface breathing or other abnormal behavior), do not redose. If signs of stress are acute, promptly initiate water replacement to dilute product. If uncertain about susceptibility to stress, use 1-4 to 1-2 dose and proceed with caution. Pond HealthGuard™ should not be used in conjunction with other treatments. Do not use if copper or zinc are present. Do not use if oxygen levels are depressed or water exceeds 30 °C (86 °F). In most ponds, product does not persist longer than 24 hours, but may in exceptionally clean water. In such cases, redosing should be delayed. In water hazy with phytoplankton or bacteria, rapid death of these organisms may cause oxygen depletion. In such situations, be prepared to replace water with oxygenated water. Death or rapid release of gill flukes may cause gill stress with some species.

To calculate gallonage, multiply average length by average width by average depth in feet and multiply by 7.5. To obtain average dimensions of irregular shaped ponds (e.g., kidney), take as many measurements as practical to avoid overestimation and consequent possible overdose. Account for water displacement by potted plants, rocks, or other decorative materials. Dispense product widely to avoid localized overdose.