id probably stick to what these guys are saying.
perhaps get a sample plant (non cannabis) spray the leaves and see if it leaves a little bit of shit behind once dry. if a little is left
not a lot id apply the mixture.
i should als note i think it cn get rid of it but its more for keeping the mildew in check untill the plant builds a tolerance or the environment no longer suits the disease ie: too hot, i think even to wet can inhibit it too though it can also allow for more stuff to move in lol.
the best bet would be use some potassuim mixed with an antifungicide but as your later into flowering i think your shit outa luck hough it wont kill you, probably just taste like shit.
you should just make it to the end of this run then give the tent a good clean with bleach and possibly some hydrogen peroxide too
. at least then you should have a perfectly sterile environment to start working with again. then your cheese and tent would be back to there origional glory and easily maintained.
otherwise burn some sulfur perhaps.
sorry i couldnt be more help bro. i normally just get rid of weak genetics or sick plants.
we all know i like to be healthy as i possibly can but a lot of the shit i recommend you guys seem to think of as brutal. ie: kill-a-mite (best product ever). though its some deadly shit and i highly recommend using during flower thouh ive had to at times and im fine