The warmth and sunshine of spring and summer months can encourage algae growth inside stock tanks for animals and nurse tanks for spraying. Algae creates a film on the surface of the water, adds unnecessary extra material to the tank and can clog drains if it is thick enough, among other problems. But there are easy solutions to this hassle.
One option is to add a copper sulfate mixture to the tanks. To do this, dissolve 1 ounce of copper sulfate in 1 pint of water in a glass jar. Add 7.5 tablespoons of the prepared solution to each 1,000 gallons of water and mix thoroughly. This water can be used for crop spraying and livestock watering, excluding sheep.
To read the entire article, link here.