Ok Everyone, I have been reading many many threads, but I can't seem to find one that explains the best placement for the RTD in the electric RIMS system that I am building. My pump will be below my mash tun and then pump up into the bottom of my rims tube with the element on the top and then flow out of the top of the rims tube back to the top of the grain bed. My question is does the RTD go immediately at the mash tun exit, at the rims tube entrance, or at the rims tube exit? I think I've seen all three locations used so can someone explain to me the best location and why? Thanks