pantyhose to hold down driftwood?
I have a piece of driftwood that shifts with every water change and wreaks havoc (dirt everywhere as it makes big holes through the cap.) The problem is that I have a dirt tank with a sand cap, and it's up and running, so I can't do the usual thing and secure the wood to anything that I'd put below the substrate without a huge mess. (Yes, I'll definitely do that next time I set up a tank!)
I heard that I could cut some pantyhose, insert some sand, and tie it off with sand in both ends, and drape it over the base of the wood.
But does regular pantyhose have any chemicals that could hurt fish? Just No Nonsense knee highs?