So it can be used everytime you clean your glass, like every few days? I'll most likely try it without shutting returns as my apex atk/ato just settled back (messing with levels takes DAYS to get the ato working again). Once I have my feed buttons programmed I'll try with returns turned down.
Yes, you can do it daily if you'd like. I would recommend daily if you are battling cyano. After defeating it, dose the snow once a week.
I clean my glass and conduct a waterchange every Saturday. After conducting the water change I will then dose the coral snow. Two hours later my aquarium looks incredibly clean and I can then enjoy it in peace for the remainder of the weekend.