Phosban reactor question

[FragIt Dan]

Originally Posted by Cal_stir

I thought carbon was not to be tumbled as it grinds it up, I pack my carbon between sponges to keep it stationary.
I soft boil my gfo just enough to keep it moving throughout the reactor.

+1 ... I am under the impression that tumbling carbon erodes it which releases carbon dust into the tank. I have read some primary literature that showed the carbon dust can cause a disease in some species of fish. I have always fixed my carbon in place (ie inside a bag or between sponges) and fluidized my GFO at a light tumble.
Dan


Dan