Have zero experience with azoo but my aros over the years, black/silver, have enjoyed hikari very much. I agree though that a varied diet is more important. My aros eat variety including market shrimp, cichlid pellets, freeze dried krill, crickets/worms, even flakes. To get them to eat such variety, I have had 100% success with small aros starting with pinhead crickets and then graduating to small bits of krill and finally small bits of food sticks. Admittedly I have never tried to sway a spoiled adult aro off live food as mentioned here! Hope this is helpful even if slightly derailing.