Still getting my first planted tank squared away...its looking quite
nice. Should I be removing the activated carbon from my filters? I
use a Penquin 170 that has carbon inside the filter material. Does
the carbon remove the trace elements and ferts I am adding to the
tank? Also, I have been changing the filter monthly as recommended
by the LFS but I have read on other forums never to change the filter
(because it houses the beneficial bacteria), however I also have a bio
wheel.

TIA,