Hey guys I just set up my first GFO reactor I put in 10 TBS of GFO (I have a 55 gallon tank). My phosphate was a 4.0 ppm this morning before I set it up. I am aiming for about .05 ppm. I was wondering how often I need to change the GFO and if anyone has any tips to help make sure I don't do anything wrong that would mess up my tank.