Advice on using old roofing slate

HamishT

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Hi, I live on a farm and have a large amount of old roofing slate (Ballachulish variety) and saw another member had constructed a great aquascape feature using slate. Are there any "dangers" with respect to minerals leaching into the water or anything I should particularly consider before starting to construct my "cave"?
 
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Slate should not leach anything into the water and can be purchased as a rock suitable for aquaria. What do you plan to use to fix the slate pieces together (if anything)? Give the slate a decent wash and scrub with water before use - no special treatment required.
 

HamishT

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Joined
16 Feb 2020
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Dollar
I was actually hoping NOT to glue it together and use sufficient chunky pieces that gravity would look after the steadiness of it.
 

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