HELP! fish stuck behind 3d background!!!!!

  • We are currently upgrading MFK. thanks! -neo
Some fish had gone MIA over the last week so I just removed a 3d from my 150 gal, removing it created a sh"tload of cloudiness, and
I found 3 carcasses behind it, from the largish MIAs(5-6" fish).
Had this problem a few years ago, and I don't think the background will be returned until I can make it impermeable to incursion. It was siliconed in, but it is so buoyant it worked loose over the years, even with large rocks against it and silicone.
Here it rests dry.
114_zpsfb5177d7.jpg
 
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