aquarium tank?.cool bro..hope you get what you wanted and get more update on the project..

btw, agree with previous suggestion..go for ads company or shop, i did some project on plaque souvenir using acrylic/perspex from ads company, not sure about the price though since you buying a sheet and not a small pieces..and also don't know if they can assemble the tank for you..maybe they can, but hopefully they do a good job otherwise it will be a mess if it leaked later on..

yes..i don't think acrylic comes with cheap price tag..have you watch youtuber "the king of DIY"?.he do most of his tank from acrylic..it need to be thick and when you need thicker acrylic sheets, you have to pay more..