Are you saying you want a fibre glass tank with glass or acrylic panels attached to the front with the rubber style sealant?. how thick do you want the fibreglass. I am not a structural engineer, at least not yet, and so I could estimate the width required, but I really am not that sure with fibreglass. Tell me how thick you think the tank walls should be. I will add in stress bars and cross bars at the top. Should I Round the corners of the tank, as this could add to the stability of the tank when filled up with near to 2 tons of water? I will start on it as soon as possible, I have a small cue of people, it gives me plenty to draw.