I hope you have better luck with the dual chamber brs media unit. I have had one for a while now and its a clogorama
I run there gfo in the first and have used alot of diffent kinds of carbon in the other and after a few days the flow starts to slow down
then the carbon side gets a rusty brown/orange film in it and even with a okld MJ1200 at max flow nothing will go thu and I have to clean it all.
I thought at one point it was the gfo braking up from to much flow but even at the point of it hardly moving the film develops. If I had it to do over again I would get seperate reactors.
But I would like to hear how it goes maby its just me .
I will probly end up getting another single and just leaving the second chamber empty.