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Lava rock = Gas grill rock?

2949 Views 6 Replies 5 Participants Last post by  hatterbee
Can you use bags of "lava" rock that is sold at the hardware store for gas grills? This rock is small enough for a background and cheap, but I'm not sure it is the same thing you buy at the petstore. Any help?

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i'm using some vinyl gutter material and cutting holes in it, then siliconing the rocks to the glue. I saw it somewhere on the web. I will try to find the link and post it. I am doing it a little diffirent than that guy did, I will be making vertical and horizontal caves and the vertical ones will hide all the pipes and cables.
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