Too much Carbon?

[cav~firez22]

Is it possible to run Too much Carbon?

I have 2 filters on my 65 gallon tank.

1 is a Fluval 404 with 2 trays full of carbon, and the other 2 are empty. no foam pads in the filter


the other is a Eheim 2229 Wet/Dry with bottom tray containing Seachem De-Nitrate, and the other has 2 sachets filled with carbon. this filter is running as continuos. not wet/dry