Stock Plex is designed to keep your livestock watering tanks free of algae and weeds.  Stock Plex can be used to prevent algae or to clean existing algae.  Stock Plex is a copper sulfate based blend safe for many animals like cattle, horses, and dogs.  

• 1/4 ounce treats 250 gallons of water
• Active ingredient copper sulfate
• Do not use in sheep watering tanks
• Available in quarts