Product Q&A

Answer:

There is no specific waiting time after applying Crystal Blue Copper Sulfate to use the pond for irrigation. The label does specify: Do not enter or allow adults, children or pets to enter treated areas until dusts have settled. So depending on how the product is applied, you may want to wait an hour or two to be sure the product has settled. If you are treating very heavy algal growth, then you probably want to wait for the recommended 3 days to hold water dormant until the algae has started to die before using the water.

Answer last updated on: 05/27/2021

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