LOOKING FOR ACRYLIC HELP !!!!!!

[fishkeeper27]

GETTING READY TO BUILD A HUGE AQUARIUM I'M LOOKING FOR A 4'X8' SHEET OF ACRYLIC AT LEAST 1.5 INCHES THICK IT WILL BE HOLDING ABOUT 5000 GALLONS OF WATER \

ANYONE KNOW WHERE TO BUY ACRLIC AT A GOOD PRICE ?? THANKS