Silicone

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burbon44s

Candiru
MFK Member
May 13, 2012
919
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milwaukee
Is there a silicone I can buy at Menard's or Home Depot that I can use in an aquarium?
The 100% silicone I found, said it was mold and mildew resistant.
I don't think I should use that!
What do u guys think?
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Thanks
I need to adhere a 3D background to my tank.
Is this the best stuff to use?

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You could go to petco or petsmart and pick up a tube of aquarium safe silicone sealant. I used it on my tank and its very strong.

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GE 1 is aquarium safe and much cheaper than silicone at the pet store and they are the same thing. GE 2 has mildicides in it avoid it at all costs. There is a black silicone by DAP that is safe but I am unsure of the number. GE 1 cost me 5.21 for a tube here at home depot in NJ your mileage may vary with cost.

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I've used GE1 to seal a tank and it worked great but what about attaching a background?

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The diy's I've seen used the silicone to hold the background to the glass just give proper cure time.

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I used it to attach a background to a 150 gal, but I didn't use enough, and maybe not enough time to cure, and it didn't hold. I mistakenly figured at the time, spreading the silicone on and around a few inches of the perimeter would suffice. The background I used was very thick (up to 7" in some parts) which made it extremely buoyant, and it shot out of the tank like breaching whale when it came lose.
If I were to attach it again, I'd probably use at least 2 tubes, liberally spreading it on the entire back surface of the background, and let it sit braced against the glass for at least 2 days before adding water.
 
I've use GE1 with no problems before as well. For that 3-D background I wouldn't think you need to spread it all over but at least make sure you go back and fourth and draw a bead every few inches instead of just adhering the edge.
 
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