Planted Tank Guru
Join Date: Jul 2010
Location: British Columbia, Canada
Depends on what your objective is, or your needs are from time to time.
In a planted tank there is usually less need to maintain the largest amount of bio-filtration media (or 'housing' for the BB). e.g. bio-rings, balls, or cylinders, etc.
Most aquarists nonetheless regularly use sponges, foam pads, or similar material - to pick up detritus and any other unwanted material from the water column.
In my case, my main objective is to maintain crystal water clarity as much as is possible, so I regularly use filter floss, double-layered (and tossed out to be replaced with new, no
less than weekly, or every 10 days at most).
I use the floss in conjunction with the regular usage of Purigen, and that, along with fine mesh pre-filter sponges on the filter intake tubes, achieves my aim.
Hope this helps.