Morning all, Seeing as I never got any instructions with my pipework kit. Big Thumbs Up Below is a picture of one of the bulkhead fitting's, I am assuming I've got it right, but before I fit and risk flooding the house with over 600 litres of water, I would double check as the wife will kill me. As you can see from the picture below, there are 2 gaskets, 1 white, 1 black. The black one is a normal rubber gasket, the white on is sold ridged piece of plastic. I am assuming the white one goes under the tank and the black one goes inside the weir, or am I wrong and both go in the weir? Thanks again to all who helps.