If you’re dosing both bacteria and H2O2 and coral snow you’re counteracting the effects of any one given solution. You need to play the temporal game. H2o2 should be dosed after lights out and before the lights come on while the Dinos are still in the free floating stage and that should help your UV. 3-4 hrs into your light cycle that’s when you would dose microbacter 7. The UV should be off for a few hours after you dose microbacter 7 to get the benefits. Cyanoclean or cyano away, a bacterial strain that outcompetes cyano (from the same line as the zeovit products) is amazing for both cyano (did wonders for one of my tanks) and has helped make a dent for my bare bottom where I was battling Dinos. I would not advise coral snow at all during this time.