Ecological Laboratories Lice and Anchor Worm Fish Health Microbe-Lift Lice & Anchor Worm may be used in any water temperature above 40 degrees F Microbe-Lift Lice & Anchor Worm should be stored in the original container above 40 degrees F and under 100 degrees F Do not store in direct sunlight and do not allow to freeze Safe for use on all ornamental pond fish, reptiles, amphibians and mollusks This product is intended for use with all ornamental pond fish. Not for use with fish or aquatic invertebrates intended for human consumption