Bare bottom - Epoxy mixed with crushed argonite

Discussion in 'Reef Chemistry by Randy Holmes-Farley' started by DaveRaz, Feb 17, 2017.

  1. DaveRaz

    DaveRaz Well-Known Member

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    I need some advice. I prefer bare bottom and was wondering if mixing epoxy with sand was a bad idea. My research indicates the epoxy, once cured, becomes inert. I like the look of sand but love the flow I'm able to achieve without it. My worry would be any possible leaching. On my current tank I have added sand twice, only to remove it. I want the sand look! haha
     
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  2. DeniseAndy

    DeniseAndy Well-Known Member

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    If you want the sand look, Marco Rocks sells this cement stuff E Marco 400. It is usually used to cement rockwork together. I have used it to make clam holders and because my lps tank is bare bottom, holders for my acanthestrea and cynarias. It works great. I acutally shape it using sand mixed with it. Looks like sand , but hard and solid. I would try a small bit and see if it gives you the look you want.
     
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  3. saltyfilmfolks

    saltyfilmfolks Lights! Camera! Reef! R2R Supporter R2R Excellence Award Reef Squad Photo of the Month Award

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    Should be fine really. Just like building a back wall or insert but on the bottom not the back.
     
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  4. GoVols

    GoVols GRUMORS R2R Supporter R2R Excellence Award MTRCMember Build Thread Contributor Article Contributor Partner Member 2018

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    I got lucky but not at first.
    I overdosed Seachem Cal and Alk. Precipt. was everywhere and I had to break up the sandbed too.
    So the sand that was under my reef aquascape fused together with my live rock.

    So when I went BB all my base rock is flatten out to that rock hard sand and nothing moves:)
     
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  5. DaveRaz

    DaveRaz Well-Known Member

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    Good feedback thanks!

    And govols, you gave me an idea which may be perfect! Haha.
     
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  6. Higher Thinking

    Higher Thinking Well-Known Member

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    I've seen it done before. However, the end result is not how you'd probably like it. At first it looks just like you'd think. Then the coralline sets in and the entire bottom ends up looking like the back of a tank that doesn't get wiped down. Not ideal...although also not the worst thing in the world.
     
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  7. Randy Holmes-Farley

    Randy Holmes-Farley Reef Chemist Staff Member Team R2R R2R Supporter R2R Excellence Award Expert Contributor Article Contributor

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    Whether there is organic material leaching from the epoxy will depend on exactly how the particular brand is formulated. It is a broad category, like saying latex paint. It is likely OK, but avoid any that say anything about mold, mildew, antibacterial, etc.
     
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  8. GoVols

    GoVols GRUMORS R2R Supporter R2R Excellence Award MTRCMember Build Thread Contributor Article Contributor Partner Member 2018

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    lol,

    Trying to make this best out of my many errors. :)

    I'll add this...

    I called Seachem and told them what was going on.
    She Said: "Sir your math is right but you just dosed 5 times over the daily maximum daily dose with those products." :eek:
    She said: "I guess you've got a nice frosting on all your glass about now"
    I said: "I **** sure do!"
    She Said: "Happy Scraping"
     
    Last edited: Feb 17, 2017
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  9. Eye Candy Corals

    Eye Candy Corals Well-Known Member

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    Superglue and aragonite work well yet that would take a good bit of glue which may be more toxic that the epoxy. I found textured, oil-based Rustolium brand spray paint that looks like aragonite. It even has darker specks that make it look like irregular sand. I plan to spray the bottom (underlying surface) of my next BB tank with that stuff. From above you will have clean glass yet it will look very much like a shallow sand bed.
     
  10. fsamir

    fsamir Well-Known Member

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    It is called Faux sand bed, if you wanna google.
    Most folks use a plastic board and glue sand to it.
     
  11. mi-reef

    mi-reef Member

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    I'd caution against this. I've done it myself and it looked great when the tank was new. But once coraline algae started growing, it was a royal pain to remove. Eventually the bottom was completely covered in coraline which wasn't the white sand look that I was hoping to maintain. Kinda like a bare bottom tank if you didn't scrape it.
     
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  12. brandon429

    brandon429 Well-Known Member R2R Supporter R2R Excellence Award

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    hey I wanted to offer something about two part epoxies in the marine tank, the arrangements will make huge cracks in time. I have used every type of epoxy you can get from wal mart, home dept, lowes, internet, to make magnets and 100% of them crack open in time. For your needs Id do the expanding foam + top covering. I have a freshwater planted tank that's 13 yrs or more by now made that way, and it still holds the substrate onto the foam after that long zero cracks. its a heckuva submersion test I can attest to, triple expanding foam is better for your application imo

    my planted bowl is 1/2 submerged and the back wall is all foam, rock, and coconut husks + planted tank substrate all welded to that foam before it dried so it looks like an amazon back wall./
     
    Last edited: Feb 17, 2017
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  13. GoVols

    GoVols GRUMORS R2R Supporter R2R Excellence Award MTRCMember Build Thread Contributor Article Contributor Partner Member 2018

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    Great Post :)

    To your point:
    My oldest brother has owned a construction business going on 40 years.
    He says there is only two kinds of concrete.
    1) Cracked
    2) To be Cracked
     
    Last edited: Feb 17, 2017
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  14. brandon429

    brandon429 Well-Known Member R2R Supporter R2R Excellence Award

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    Here's update pic of the terrarium background top one just now, totally full of roots and overhangs not one bit is broken down. This bowl started in about 2003 the cam date is wrong

    Foam locked in wood and rocks, for a marine test I'd be curious to know how a simple cleanup crew fared in a cycled test version of a reef foam setup. I think there is already posts of people doing it w foam

    IMG_20170218_112709141.jpg
    terrariumglobe.jpg
     
    Last edited: Feb 18, 2017
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  15. DaveRaz

    DaveRaz Well-Known Member

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    Very very cool
     
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  16. GoVols

    GoVols GRUMORS R2R Supporter R2R Excellence Award MTRCMember Build Thread Contributor Article Contributor Partner Member 2018

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    ... :rolleyes:

    0622171801a.jpg



    :)
     
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