Yeah I tried it, and I was very very sorry I did. mess does not describe it.
I now use peatmoss under the gravel.
Kay

"Boris" wrote in message
.rogers.com...
I would keep away from potting soil (as substrate). You'll have a big mess
on your hands, tank, filters, water.

Boris

"Marek" wrote in message
...
Does anyone have experiences using potting soil as a substrate?

I like to put 1" of soil at the bottom and cover it with 2.5" of gravel.