NANFA-- busy vermin

John B (
Wed, 11 Feb 2004 22:02:43 -0600

A few months back I redid my planted tank. I put potting soil on the
base and covered with 1-3" of gravel. I also planted with mostly native
Texas plants etc. Shortly after I planted small neat piles of dirt
started to appear on the surface of the gravel, mostly at the base of
the stemmed plants. Now, virtually all the dirt is above the gravel.
It must be due to some worm, correct? Or is the gravel sinking and the
soil is displacing the gravel? I did not place a layer of sphagnum or
of the like between layers. It (or the phenomenon) has completely mucked
up the tank and obviously I have to redo it. I have looked and have
never seen "hide nor hair" of the critter but I am wondering if anyone
has had the same experience and what was attributed to it.

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