Patented CuLator PowerPak 1.0 is great for maintaining a metal-free and stain-free pool. Each PowerPak removes and eliminates 1.0 ppm total dissolved stain-causing metals from 20,000 gallons. The goal is to have 0.0 dissolved metals in your pool water. For best results keep a PowerPak 1.0 in your skimmer and change monthly to help prevent metal stains. The CuLator 1.0 lasts longer than a month depending on the metal level and the contents change color depending on the metal remove

• Eliminates 1.0 ppm total dissolved metals (staining begins at .3 ppm)
• Treats 20,000 gallons
• Works in fresh or salt water
• No phosphates
• Non-toxic
• Works for up to 30 days or longer depending on metal level
• Made in USA