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Results 1 to 10 of 10
  1. #1

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    Question Is hot glue aquarium safe??


    0 Not allowed!
    I am trying to create some good looking hardscape with a few rocks, I want to secure them together so there is less risk of them falling and injuring any fish. Silicone is just not doing the trick it does not adhere to the rocks well and does not bond strong enough so that the rocks can be moved as one piece. My understanding is that hot glue is just non-toxic plastic that is heated and cools hard, any thoughts???

    I put this in DIY cause it seems like it could apply to just about any project.

  2. #2

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    Super glue, aquarium silicone, and non-toxic hot glue have all been used with success.
    -Dr. James

  3. #3

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    You just posted in a thread that had a million suggestions....

    Anyways, I recommend gorilla glue - it is no toxic, very adhesive, and i've used it in my tanks to stick slate together
    30g - Planted - need to do some serious rethinking
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  4. #4

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    0 Not allowed!
    What kind of silicone are you using?
    It should stick rocks together without a problem.They must be clean and dry first.Apply the silicone and tape them together with masking tape.Allow to dry for 24hrs.It may take a few days to get it all together but it should work.
    I use GE Siicone I 100% rubber silicone.That and aquarium silicone are the only two I use.
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  5. #5

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    Quote Originally Posted by robflanker
    You just posted in a thread that had a million suggestions....

    Anyways, I recommend gorilla glue - it is no toxic, very adhesive, and i've used it in my tanks to stick slate together
    Yea I did post the question there first for about 10 seconds before I reconsidered. I thought that since the thread title did not really address my question people might just figure the new post was about the OP. If I started a new one with my ? as the title I figured I would get more responses. Good tip about the gorilla glue. Thanks

  6. #6

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    Quote Originally Posted by Northernguy
    What kind of silicone are you using?
    It should stick rocks together without a problem.They must be clean and dry first.Apply the silicone and tape them together with masking tape.Allow to dry for 24hrs.It may take a few days to get it all together but it should work.
    I use GE Siicone I 100% rubber silicone.That and aquarium silicone are the only two I use.
    I used GE I but it just didn't seem to do the trick. Probably because the rocks are not clean enough though.

  7. #7

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    0 Not allowed!
    I've used non-toxic hot glue before. Works like a charm. Just make sure to let it CURE before putting it in the tank. Firm-to-the-touch means the glue is SET; CURED means dry all the way through. Give it at least a half hour to be sure and you're good to go.

  8. #8

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    It doesn't matter what you use,if the rocks are not clean enough whatever you use will only stick to the dirt.
    Scrub them with a brush under warm water.Let dry and then try again.
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  9. #9

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    I just happen to be working with some rocks this time. I was more so curious about the hot glue just generally for anything that may arise in the future. I'll get the rocks squared away one way or another.
    Thanks all

  10. #10

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    0 Not allowed!
    I tried hot glue, and it held together fine. But when I put it in the water, it just fell apart?? Don't know what went wrong...
    44G Tall
    t i g e r --- c o l o n y

    5G Hex
    c l u b --- b e t t a

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