When I dose 40ml of vinegar in my 100gal tank, there was green film in glass,
When water change 15%, dosing 60ml daily and MB7 once, I could find white film in glass.
I do not dose MB7 daily but I think MB7 can boost the bacteral growth.
HTH
Now I maintain the quantity of vinegar and do not dose MB7 daily.
I am still watching to my tank. What I am thinking is right.