Tuxedo Urchin pooing a lot?

[GTA656]

Hi, I bought a Tuxedo Urchin around a week ago to help with some algae in the tank and on some corals. It seems to be expelling and consuming a lot, which I am seeing so many pellet like waste and white sand/calcium maybe. I am bit worried whether it will increase my nitrates or not(currently at 20ppm).

 

[Sdoutreefer]

I don't think you need to worry about the increase of your nitrates. Nitrates aren't terrible, just don't want big swings. If you are worried, start testing and increase nutrient export.