viewing window

Hey all - I am looking to build a 96"L x 35"W x 30"H or 96"L x 35"W x 36"H plywood aquarium - and I'm trying to work out the viewing panel. Just looking to do the front and not the sides. It's my first time building one so excuse the ignorance. My first question is what size viewing panel...

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...