I am about to buy a 3-way HERMS coil. I like it because it has 3 coils in parallel. At the moment I have 50l mash tun, but I am planning to pump this to 100L at some point. In the description for the 3-way HERMS coil, it is mentioned that it is designed for mash tuns of 70 liters of capacity. Are there any limitations in terms of the mashing process itself if I use it for smaller mashes?