Thanks for the answer, much appreciated!
Hmm... a software sensor? How and what do I need to connect to where?
Also, if I decide not to do this, what is a reasonable (water)temperature to keep as maximum temperature?
I'm running an i7 6850 (not overclocked).
As stated, put some water and air temp sensors to the AQ and create a delta-temp between those two OR just use the water temp since the temps gradually increase and are not as aggressive as say a CPU/GPU temp as you'll notice your fans ramping up constantly while adjusting to those temps. With the way we do it, its a nice gradual increase and decrease.