I think I have caused a bacterial bloom - water has been cloudy and yellow for days. I have completely stopped dosing bacteria. Any suggestions on getting this to level out? I have about 4x the suggested amount of ROX .08 carbon in the tank (started with normal amount-saw no improvement). I have seen on forums that water changes both help and hurt so I am unsure if I should continue with water changes. I have a UV that is too small for my tank volume but I may try to hook it up anyways to see if it helps at all. I am also thinking about getting some chemipure blue. I tested about 15ppm nitrates and .043ppm phosphate. Salinity sitting at 1.025sg.All systems will respond a little differently. So there is no one silver bullet for ALL tanks. That being said, the "goal" of the NP BACTO Balance, in a perfect scenario, is not to increase or decrease anything. The NP BACTO Balance is designed to "maintain" whatever the concentrations were that you started with, while still effectively carbon dosing the system to facilitate the PO4 adsorption of your corals.
Unfortunately, the best, most effective way to reduce the NO3 concentration is, as you have already mentioned, water changes. If the system is resulting in lots of NO#, I would take a hard look at nutrient import through foods or possibly other products that are getting added. That NO3 has to be coming from somewhere!