I start running my gfo for about a 10 days when I notice I have more algae then normal, it help to reduce the algae.
I notice a lot of people state that bio pellet remove more Nitrate than Phosphate with 15 part of Nitrate and 1 part of Phosphate or 15:1 ratio., it very true in my case. I do test every week since I swap my tank.
Cause Im trying to tune it to the sweat spot, my bio pellet tumbling very nice and slow, I also turn output at a slow state. Let me try to take a short video of my sump set up and upload tonight when I get home.