Just got my RO setup ready to produce water for the first time. Apart from springing a few leaks along the way it all started going well till I realised that the pure water was leaking out the bottom of my storage tank. The tank came with a 1" BSP outlet that I had screwed into the hole at the bottom of the tank. Am I missing a part or have I made a silly error in the way I fitted it.. The plastic thread screws in nice and tight into the tank but there is a half moon opening either end of it that just lets water pour out. Any advice would be greatly appreciated.