I am with out anything on my 29g .
I have around 50+ pounds LR
, very live LS
now... I have a Millenium 2000 HOB
with a Bio Grid. I removed and I only run carbon pad 2 weeks on 2 weeks off.... I do run the millenium. all the time, even with out the filter pads as it gives the center of my tank extra flow... 160gph soft flow plus I have 2 power heards (one at each end) and I have a place to drop a carbon pad to polish my water too.
I am adding a sump, only to have a place to sink the heater, add top off water and such.... no bio balls or antything.
I ran my 55g the same way whe I had that.
Whatcha got in your 29g?