Algae itself will suck up nitrates and phosphates, just depends on how much algae you have. They are linked, but usually nitrates will rise if phosphates are at zero because bacteria needs phosphates to help them get rid of nitrates. Not sure how the break down of how and why as I am not a scientist, lol! I also dealt with 0 nitrates and 0 phosphates for a while and when I added a higher par light fixture to the tank Dinos exploded along with cyano which makes me believe that it was always their just waiting for a trigger. At that time though my load on the tank was very light, since them I have added 3 tangs and they alone add alot of nitrates and phosphates to the tank. It may be as simple as feeding more to the tank, but lets see if we can get some people that know more than myself involved.
#reefsquad
@Randy Holmes-Farley