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![]() It's a sedimentary rock, and almost nothing but calcium carbonate. But I suppose your concern is a valid point, so why risk it.
I bought half a box of 2x2 "unfiinish, unfilled, tumbled" travertine tiles in the past from Rona, and use a 2" diamond hole saw(cuts like butter!) to make round disks. ![]()
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28g Nano Cube drilled with 13g sump in stock stand. Vertex IN80 Skimmer, Phosban 150 Reactor, Apex Controller, DIY LED with stock hood, dimmable Established March 2006 |