Gfo Carbon - single cartridge

[240gallons]

I chose not to mix the GFO and Carbon as the directions said too....

The GFO is tumbling and the carbon is not. Do you see any issues?
https://youtu.be/G04QD8thM6s


http://uploads.tapatalk-cdn.com/20160629/580b9e6c9c03fab71fa357e86d9f5b39.jpg

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[240gallons]

https://youtu.be/DsLI2pR36Ho

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[downbeach]

If it stays that way, you're fine. But if the GAC drops it'll prevent the GFO from tumbling, causing it to form into a brick. The other issue with doing it this way is the replacement time for the media, i.e. in my case I would get in excess of two month's out of my GFO, but would change the GAC at least once a month, as it would be so covered with bacteria in that amount of time to yield it ineffective. Ultimately you would be better served to use a separate reactor for each media, giving you the flexibility for appropriate flow, replacement time's, etc. You might even consider running the GAC in reverse flow to prevent any tumble.