What corals do you predominantly keep?
I think your PO4 levels are too high, aim for 0.03 or less.
Yes vinegar will, but it is 6-8 times less potent (depends on what you read) than vodka and dependent on the doses you may need, could affect your pH (downward) if you are pushing the carbon dosing hard.
For me a mix of vodka and vinegar works well to lower NO3 fast.
This is also dependent on your tank volume and your experience with dosing carbon in the past,so you know the signs to look out for i.e. bacterial film, lightening corals, dropping the dose at the correct times, skimming effectively and so on.
Lower nutrients and especially ULNS can result in tip burn in some acropora sp. if alk is too high, typically with a low nutrient system, we tend to keep alk at<=8 dKH
You can drop the NO3 values at any pace you like, it can be gradual or very fast as my graph shows?
The tank above is ~600L, but you have to test for NO3 every day and know when to back off the dosing from the signs you see, so a high degree of caution must be exercised if you push the carbon dosing this hard!
The above method was also accomplished with the addition of a bacterial source in prodibio, but stability or one of the other commercial brands would work, at their manufacturer's recommendations.
You will see bacterial strings and mats on your rock and exposed tank surfaces.
Your skimmer (has to be rated for above your system) will remove bacteria such as this!
There are many carbon dosing charts available but they really don't scale up too well, as my graph shows, you can push it if you have to!
I would let your alk drop together with your NO3 value.
Here is GlennF's dosing chart from his online calculator!
I hope this helps