Things You'll Need
- Bleach water solution
- Copper sulfate
- Baking soda
Instructions
Clean the water tank often. Drain the water from the tank and wash the interior with a 10 percent bleach and water and solution. Rinse the tank with clear water before filling it with water for the horses.
Add copper sulfate, sometimes called bluestone, to the water. Follow the manufacturer's instructions on commercial products; but one teaspoon of copper sulfate commonly treats up to 1,500 gallons of water, making it a product more suitable for large tanks.
Sprinkle baking soda on the water tank. Start with a couple of teaspoons and monitor the tank. If algae continues, add more baking soda. Baking soda is not considered as effective a deterrent to algae as cleaning and copper sulfate.