I have a BRS dual reactor. GFO & Carbon. 200g total volume. I used 1.55 cups of gfo and 1.85 of carbon per the BRS calculator.
Is my GFO is tumbling correctly or ideally? Too much? Less? Always wondered how a slight tumble was efficient.... bottom never contributes or so it seems. Yes I know the carbon does not tumble and is held in place by bottom and top sponges.
Is my GFO is tumbling correctly or ideally? Too much? Less? Always wondered how a slight tumble was efficient.... bottom never contributes or so it seems. Yes I know the carbon does not tumble and is held in place by bottom and top sponges.


