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Dear Monsterfishkeepers, I am planning to build a concrete aquarium of 8 feet length, 2 feet wide, 4 feet height, around 400 gallon with front and one side viewing panel. Please suggest what material should i use for viewing panel. Normal glass or acrylic? What should be the thickness. Kindly...

so I am playing with the idea of making a pond that is semi underground with a window in the side. has anyone had any experience with this. I have found a few places that make stainless frames for this reason but man they are expensive and the only ones I have found are from overseas so add a...