It does but it doesnt take very long to put it all back in and its nice to switch it up every once in a while.The geo's and the loaches do a fairly good job of sifting through the gravel.I water change weekly and do the gravel every month or so.
Yea that geo loved the black sand in the other tank he was in.I was thinking of possibly putting a sand pile in a couple corners.He seems to love this gravel also.But the deal with going with black gravel was i got a couple hundred pounds for free so........sands great but economically in this case gravel was king.