Well, I am flying blind now. Sold my ACiii on eBay hoping to get some value from it so I can upgrade to the Apex.
<img src="http://www.rowelab.com/AquaController/graph1.php?view=30days&userid=ah30k">
I turned off my heater last night to graph the temp drop without the heater on and then disconnected the ACiii this afternoon to ship it to an eBay buyer. The distinctive temp drop at the end was the overnight without heaters.
It stinks being blind like this.
I hope the Apex production units come in soon from their CM and they don't have any defects. SW updates are easy but HW defects are more troublesome.
edit - BTW, the four day during the last week without a pH peak and temp peak were the four days I turned the lights off to battle some algae growth. You can see a daily temp and pH bump from the lights except for the four day period the last week before I shut down.