Glass Panel And Fibre Glass For Tropical Pond- Help?

[capester]

Hi everyone I am having a fish house in the near future and am wanting to make a raised tropical pond from breeze blocks and then fibre glass the inside to make it water tight. To make things more complicate I want to incorporate large glass panels in the front for viewing. I am looking for it to be about 8x3x3. Has anyone got any tips (especially on the fibreglass) and what thickness of glass I would need? I am having 2 panels of glass around 3 foot each 26" tall. Thanks