Originally Posted by Kingcobra
Hey PB Smith,
No I am not using any mechanical filtering. Have rocks and matrix as filter media.
Sent from my iPhone using Aquarium Advice
the possible issue here is that the detritus and bacterial flock (dead bacteria cells)
will quickly clog the pores in the matrix and thereby reduce it's effectiveness. A filter sock or other means of removing those particles would help alleviate that to an extent.
One way around this would be to fluidize the matrix so the outer surface is continually being "scrubbed clean".
Using a filter sock also allows you to remove waste from the system before it has a chance to be broken down to ultimately become nitrate.
What I meant by a "thin margin of error" is that in the event of a mishap that somehow compromises your systems filtration ability may have more drastic and faster impacts than a system with more and/or redundant filtering schemes in place.
If it is working for you, great.
personally I prefer a more robust scheme and a bit of redundancy in my set-ups as well as allowing for mishaps.