High nitrate and phosphate led me to a GHA outbreak. I got my nutrients under control by upgrading the light in my fuge (I have several macroalgaes in there, mostly cheato) and using GFO which took a couple months. I also cut down on my white light. The GHA is mostly better but I gave myself a nasty cyano outbreak Today my PO4 is .03, NO3 5. I turned the GFO off. Wondering if everyone's experience with Vibrant is that it would be likely to make this situation better or worse? ETA: tank is a 75 gal mixed reef set up for a little over a year, 8 small-med fish.