My husband fitted a small piece of electrical cable tray into the end of the gutter end of the greenhouse leaving a piece about 4 inches sticking out, he then pushed the tray end into a piece of flexible hose. It must be a good fit, otherwise the tray will fall out. This means we can now put the hose into any kind of water retainer. You can get this cable tray from any well known DIY store. You should with any luck get a piece the correct size. Its worth trying, we have had ours in place for years now. Hope this makes sense.