70, but with a frost warning tonight, and a forecast high of 59 for Saturday we won't even think about turning up the heater. Been shocking the pool anyways. Water got a little cloudy after the swimming last Sunday, and the CC levels started to rise. I obviously wasn't raising the FC level enough since the CC levels rose rather than falling. Turns out I was using the pool calculator shock level which is lower than the one from the CYA chart in pool school. Proper shock level tonight so hopefully I can get the pool back under control before the weather warms up again.