EF will stop all out put below 40. I had ENC working all winter, in an outdoor bin, without temps dipping into the single digits. EF's dided, ENC kept on going.
ENC are the BEST all around worm in my experience. I am in central Virginia and have more success with ENC because they have a much wider window of operation. They can be a little too wet longer than EF. They can be a little colder and a little hotter than the EF.
They just aren't as horny!!
