I called for info. They answered the phone quickly. When I ordered online, they sent confirmation quickly and delivered the product quickly. I like that! We’ve been using two kinds of replacement filters in bottles we bought from another manufacturer. Plastic tubes, and bags. We soaked everything according to the directions. The plastic tubes make the water taste funny, like a fish flavor. I’m allergic to fish, and this is not a flavor I want in my water. The bags are fine, and we will continue to use them. I support alkaline water, and have experienced many important health benefits from it! The plastic tubes make