Seems like after few weeks the GFO in my TLF reactor tends to form a shell around the edges and only the center tumbles (no matter how hard I hit it with flow). Once it starts to depleat and turn greyish the outer portions are still nice and red. Is it ok to stir it all along and get the most use out of the media (given the price)?
I've tried blasting it during PWC's with full flow and it still tends to develop this outer shell.
I've tried blasting it during PWC's with full flow and it still tends to develop this outer shell.