Just the thing you need for your summer water management needs! New in packaging from Bioverse, this floating stock tank water cleaner is low profile, takes up very little space, and naturally breaks down algae and sludge build up. Uses packets that contain bacteria that breaks down all the gross organic material that builds up on water tanks during summer months. This bacteria is safe for horses, does not smell or alter the taste of the water. Even the pickiest horses won't tell the difference! Each floating pod creates up to 500 gallons of water, and each packet lasts for 30-45 days (depending on water volume). This package contains 180 days of packets. This will work for decorative water features, ponds, and other water features. New in package, but the package is a bit dusty from storage. Offered for way less than retail!