<a href=showthread.php?s=&postid=14267535#post14267535 target=_blank>Originally posted</a> by cybrsufr
I can tell you that it may be pure coincidence but I have been dosing Vodka for the past 3 months and had gotten my NO3 down to approx 5-7 and PO4 down to .01 and still had two patches of Cyano that I could not get rid of no matter what I did (sucked it out every 2-3 days, lights out for three days, etc). I started Dosing VC along with the Vodka a little over a week ago and at the same time sucked out the Cyano patch. Now a week later the Cyano has not came back at all and the NO3 is down to ~5ppm. I am dosing 6000mg broken into two 3000mg doses, one in the AM and one in the PM. I have 273G total water volume after taking into account the Live Rock and Sand in the tank and sumps. That puts me around 15ppm total VC. I also notice my two very small patches of Bryopsis have started wilting away. So there is merit in this experiment. I plan on doing the 15ppm dosage for approx 14 days, then dropping back to 5ppm a day and will probably keep it there for some time. As I have said before the only thing I have noticed at all and it may not even be a concern, is that my ORP temporarily drops drastically when I dose VC, however it rebounds in 2-3 hours and is back to normal after 8hrs. Randy, I think explained that this will tell you when all the VC has depleted in the system (which has a life of about 8 hours in SW) and that does correspond with my ORP readings. Most people never even test ORP and if it were not that I ran Ozone before starting to dose the Vodka, I also would not have even checked it. ORP is, though, a reading of the Reduction/Oxidation potential of the water and does have a purpose, but I am beginning to take the stance that it does not make a huge difference unless it stays low for an very extended amount of time. So far I am liking the results of the VC on everything in the tank, Zoas, LPS, SPS and fish. Better color, lower NO3, healthier looking, and no real negatives as of yet