I'm still scratching my head why my water temp is not rising... In all my tests, my water temp has been 19 C. I even thought my probe was shot, so i stuck it in my mouth to verify it was working [it is working]. I can't figure it out. everything i've read/seen says the temp of the water should be rising & at a fairly steady rate. maybe it's b/c i have an open cell still; i don't know. I'm just starting out. I'm using BFE to establish a baseline before experimenting with HV, chokes, PWMs, etc. That way i know what it looks like and what to expect. I've still got a lot of catching up to do...