Polymer Clay Tank Decor

Discussion in 'Aquarium Aquascaping' started by Girlygreen, Jul 14, 2019.

  1. Girlygreen

    GirlygreenNew MemberMember

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    Hello,

    I’m interested in making a polymer clay hellmouth for a blind cave tetra tank. I figure they won’t see it so they won’t be scared, but it would be super eerie to have a cave made out of faces that they can swim around in.

    Has anyone used polymer clay in aquarium decorations before?

    Is it inert or does it alter parameters?

    Would I be better off sculpting the clay, making a mold and then cast it in resin?
     
  2. CheshireKat

    CheshireKatWell Known MemberMember

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    I've made a polymer clay "log" and painted it, but haven't put it in an aquarium yet because I wanted to seal the paint and haven't been able to find something I'm 100% certain will work, is safe, and affordable. I've read that epoxy can be used. To be honest, I've been too afraid to go any further in case I mess up, waste money, or kill fish :emoji_sweat_smile:
    But all my research has indicated that once fully baked, polymer clay is inert.
     
  3. OP
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    Girlygreen

    GirlygreenNew MemberMember

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    Okay, I could just buy polymer clay in the color I want to work with or mix it together myself.

    I’ve had luck with acrylic paint on a decoration that was specifically made for aquariums, but it doesn’t last long. Might try marine epoxy, but then it would be weird and shiny.

    Oooh, maybe I could mix very fine sand in with the epoxy, or dust it on the top as it dries, and then it wouldn’t be shiny.
     
  4. CheshireKat

    CheshireKatWell Known MemberMember

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    That's been my biggest problem: finding a sealant that isn't whiny. I don't want shiny rocks and wood.
    Um. I mean shiny, not whiny :emoji_smile:
     
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    Girlygreen

    GirlygreenNew MemberMember

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    Oh wait! I am such a colossal bonehead. I could seal it with a very thin layer of aquarium safe silicone.

    I will have to do some tests to see how thin it has to be to keep the paint sealed but not look too chunky.
     
  6. Noroomforshoe

    NoroomforshoeValued MemberMember

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    There is now a dish washer safe type of Mod Podge. I have herd of people using it for aquarium items, I would personally do more research Before I used it but, dishwasher safe is ment to be in water.
     
  7. hedgiemom

    hedgiemomNew MemberMember

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    Poly Resin Decor:
    I too was wondering if this little Buddha would be OK to put into a tank? The description says made of fine poly resin. Could I paint it with Krylon Fusion paint and make it aquarium safe? Has anyone else tried this?
     

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