I wish I'd never done business with this rip-off company. I sent my teenager to buy two jugs of metal out for my chlorine pool - they sent her home with non-chlorine metal remover and then refused to give our money back. They don t know anything about pools and shouldn t be selling pool supplies, especially when they help the customer find what they need and its the wrong thing. I called to ask about returning it and they said no - and then hung up on me! I d recommend AVOIDING this place like the plague.