3d background help

[thechief]

Hey everyone I had a question couldn't really find the answer I was looking for but I was wondering if its possible to make a background and put it into a already running tank I know I won't be able to use silicon I thought I would just wedge it it to make it stay but what I'm worried about it the cure if it will hurt my fish or what I should do the tank is 150 gallons BTW any other questions just ask thanks guys!

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[Bktgifridays]

You could attach a bunch of magnets to the background. Saw that suggested in an earlier thread. Not sure about the curing/leeching issues though.

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