Hi guys I hope you can help. My 40 litre buffalo gl349 arrived and I'm preparing for by biab session. My question is what temperature does it heat to via the 1 - 5 settings. The manual does not tell you so I assume 5 is max boil but 1 - 4 i have no idea. If I for example wanted it at 70 degrees and held there which setting would I put I too? Thanks for your help.