United Chemical Corp. - Swamp Treat Pool Algae Eliminator, 1lb

Most pool owners experience a pool algae bloom at some point. Swamp Treat Pool Algae Eliminator uses a patented formula to accelerate chlorine so much that it can turn a green pool back to clear in 24 hours or less. Even better - this powerful treatment leaves a chlorine residual, eliminating the need for a follow-up shock application. Now you can save time and money - and get back in the pool sooner than later!
Directions:

• Add 1 pound of Swamp Treat per 20,000 gallons of water by applying directly to the pool water surface.
• Brush the pool or spa surfaces.
• Immediately add a liquid or dry chlorinating product for super-chlorination.
• Before swimming, measure the chlorine level with a water test kit. Do not enter the water until the chlorine residual drops to 3 ppm.