I started using it to prevent eroded craters from watering, the appearance is a nice bonus. And the books say that top-dressing also helps keep moisture in. I use aquarium gravel, and the pots with larger drainage holes get bigger chunks in the bottom to keep the soil from falling out. I finally used up most of the stuff from a retired 10-gallon tank, and had to buy a couple new bags (I don’t try to save every little bit when re-potting). The small bucket of extra gravel makes a good doorstop.![]()
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