Been trying real hard to get my nitrates to go bye bye. A days ago i had surgery done on my neck so i won't be able to do a water change this week and maybe next week either so I decided to give Instant Ocean natural nitrate reducer. First which it dosen't tell you it will lower your PH quikly but i expected that so wasn't a problem. After a day I appeared to have a brown out on my sand, and now the area of the brown has turned pink. Isn't this unwanted bacteria or is it the bacteria in the product that turns nitrate to nitrogen gas? Here is pic