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Aluminium Oxide grit as top coat

Discussion in 'Sediment / Substrate' started by leo28n2000, Nov 10, 2017.

  1. leo28n2000

    leo28n2000 Junior Poster

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    Can I use Aluminium Oxide sandblasting grit of 1-3mm size as black sand gravel for a planted aquarium? I plan to use mineralised soil as nutrient rich base layer which would be covered by this black sand. We dont get Black Diamond sandblasting grit where I live and am looking for something thats dark black in colour and cheap too. I have heard that Al. Oxide is harmful only at Ph below 5, if so I think I should be able to use it. Please help. Thanks.
     
  2. ForTheHalibut

    ForTheHalibut Member

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    Using a mild neurotoxin as an aquarium substrate is probably not a great idea. Consider using pretty much anything else.
     
  3. Phishless

    Phishless Lifetime Member
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    Aluminum Oxide is usually the 2nd highest % content on any coal slag product.
    Coal slag is inert and the actual contents are not available in the water column.
    @burr740 is proof of this as are many of the rest of us.
     
    burr740 likes this.
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