how to attach 3D background to acrylic

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the_deeb

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Apr 22, 2006
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My next setup is probably going to be acrylic. I'm planning to build a 3D rocky background out of styrofoam. What would be the best way to attach it to the tank? With glass tanks I'd just use silicone but I've heard that silicone doesn't adhere well to acrylic. Ideally I'd like a solution that would firmly hold the background in place, but would not be permanent so that I could remove it if I decide to rescape in the future.
 
Press a few large pyramid shaped lead fishing sinkers into the bottom of the piece. Should sink without a problem.
 
Styrofoam will float a lot of sinkers. You can use magnets, silicone will still work, it's just not a great bonding material with acrylic. a lot of people used to use magnets.. just a pain.
 
why not rig up the suction cup that you have to thread through the plastic holder for some heaters

wrap some fish line around the suction cup knob part and then perforate the styro with the line and basically sew a few say four or so cups to the bottom and back of the rock if you putting it agains the back it should not move

or to add some weight hollow out the back side of the rock and add some substrate to the fake rock like a form of ballast and it should stay in the bottom

for me im not a fan of puttin lead or any other metal in my tanks
 
I have a full styro / concrete background on a 180 gallon acrylic tank for 4 years now and all I used was silicone and so far so good.
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