Originally Posted by BigJim
I don't really care for any ammonia reducing chemical filter media. My biofilter takes care of the ammonia. I run sponges and the ceramic biomedia, using carbon only when I want to remove medication or tannins from the water.
Try adding a second sponge to the filter. It's possible the original sponge may have broken down a bit and is allowing some stuff to slip through.
Do you mean poly-fil? It's basically filter floss/polishing pad, but because it doesn't say Aquarium on it, I save the 250% mark up and it was 40% off (GOOB sale) so I saved even more
Using 2 sponges with the same ppm
capture rate, doesn't really do much since the first one has stopped all the detritus of that size. You need to run a finer sponge/media behind the first sponge in order to remove anything to finer. Poly-fil is the perfect answer to that filtration segment and it helps keep junk from clogging up the biomedia.