3D Background in set up tank.

[Karl K]

Karl K, your tank is about 55 gallons? Is it planted? How many fish? I still think it would be easiest to get a 50 gallon Rubbermaid container. And put your substrate and fish in there. Hook up a heater and filter and your good. Take your time on the silicone job. This way you will have no regrets later. This is just me. It would drive me crazy to do it any other way. But I love messing with my tanks. Part of the fun for me is the build. Good luck!

It's 140g

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[duanes]

The above background (6ft long), is not the thin style, I believe it is made in Sweden, and is "very" buoyant.
The first time I tried to install it , I drained the tank 2/3 siliconed the upper area and attached clamps.
When I refilled the tank, it flew out of the tank like a breaching whale.

I did manage to get it in for a number of years.
It is now out and going to be "heavily" siliconed into a totally dry tank, and will be cured at least a week before water is added