The best I’ve found for eradicating planaria. Only one drop per 10 gallons for three days and no more planaria. 10% water change advised after three days.
"To come into compliance with California law and regulation, Blue Crown Aquatic will not be selling any restricted species of the taxonomic family Cambaridae, including, but not limited to crayfish. except as otherwise permitted by the California Fish and Game Code or sold to its customers restricted species of the taxonomic family Cambaridae, such sales were in violation of California law and regulation and have now been discontinued."
The best I’ve found for eradicating planaria. Only one drop per 10 gallons for three days and no more planaria. 10% water change advised after three days.