Yes and no. I built my mash tun this past weekend and am planning on brewing tonight. I used 1/2" parts and I don't have any 1/2" tubing at home. I'm needing a hose to get the wort from the MLT to the BK. I am not using pumps right now but plan on it in the future so I was going to just go ahead and get tubing that could possibly be used later on when I introduce pumps into the system.