This is my first time working with acrylic. I found it helpful to move the acrylic around while applying the weld-on 4. It seemed to help it fully bond without air pockets. Granted there are a couple tiny bubbles. I had to apply a lot more liquid then I anticipated. Hopefully this helps someone.

This is a 350 gallon tank. I'm adding 1"x1"x12" acrylic strips to the inside seams. It may not be clear in the video but I am sitting inside the tank.

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