Cool, you are trying the Salifert AA, I will be interested in what you observe when dosing it. For some reason it doesn't get the love that some others do, but I havce had nothing but good luck with it. It has been one of the few products I have stuck with for many years.
That is interesting about dosing AA during the day. I have only dosed it at night. I originally started doing it when I was also feeding my tank live rotifers every night. Polyp extension was best at night, so for getting the acros to try and eat the rotifers I was dosing at night, then I started using AA in conjunction with the rotifers, and after I stopped feeding rotifers I just kept going with the AA at night just out of habit.