Currently I am running an under gravel filter in my 29 gallon tank. It is being powered by a 2 outlet air pump with the carbon cartridges at the top of the tubes. I've read articles about these UGFs being bad as for trapping fish poop etc under the plates and the current not being strong enough to raise the debris. My question is this: If i remove the plates, and buy 1 or 2 triangular sponge filters what else would be required to make this thing run? could I use the uplift tubes that are on the UGF
right now for the sponge filters? Also, how effective are the sponge filters? (I'm still going to be using my el cheapo hob
filter as primary filtration) Also, how do these filters work? the air is just pushed down the tube then does the air come right back up the tube like it does in the UGF
uplift tubes? Just curious.