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Results 1 to 10 of 11
  1. #1

    Default aquarium safe glue??

    0 Not allowed!
    I made a DIY cave out of pvc pipe, and I would like to coat it with the sand that makes up my substrate to help it blend in.
    What kind of glue would be both aquarium safe and not leech any chemicals into the water that would harm the fish, and thin and waterproof enough to cover the entire pipe so I could sprinkle sand and it would stick and stay stuck underwater?

  2. #2


    0 Not allowed!
    If you give the surface of the PVC a light sanding, you could use aquarium safe silicone. I have done that before and it works great
    If you take your time to do the research FIRST, you can successfully set-up and keep ANY type of aquarium with ease.
    "Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony Calfo
    Fishless Cycle Cycling with Fish Marine Aquarium Info [URL=""]

  3. #3


    0 Not allowed!
    a brand called 'gorilla glue' is very strong and I've used it before without ill effects in my tank.
    your friendly neighbourhood arowanaman!

  4. Default

    0 Not allowed!
    +1 for silicone..... I would be Leary of any type of glue not food/aquarium safe....just my $.02
    . Scott.

  5. Default

    0 Not allowed!
    DAP silicone, they sell one especially for aquariums at home depot for like $7, would be plenty for what you are looking to do

  6. #6


    0 Not allowed!
    I used the silicone and sand on my pvc tubes, as well. Just remember to allow it to dry for two days. I only use in the tank what is stated for aquarium use to stay on the side of safe. Small gravels or shells also work.
    Last edited by Lady Hobbs; 03-11-2013 at 12:11 PM.

  7. #7


    0 Not allowed!
    2 component epoxy is often used in DIY backgrounds. That would allow for an easy even and thin coat. When prepared properly it should harden beautifully. Drawback is that it's sold in amounts far greater than what you'd need for this job. So, aquarium grade silicone is probably your best bet.

  8. #8


    0 Not allowed!
    My vote is silicone as well. I use it all the time on the backgrounds i make. I know there are other types of glues but this is the safest and cheapest.
    Angel breeder wanna-be

  9. Default

    0 Not allowed!
    GE Silicone I for Windows and Doors. Make sure that it does not contain mold inhibitors.

  10. #10

    Join Date
    Aug 2010
    Jacksonville, FL

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    0 Not allowed!
    I use GE Silicone as well with no issues.

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