Well if its yur first endeavor with acrylics I would suggest making some other projects first and then you be the judge on weather or not you can do it. Edges have to be cut smooth and square and fit poperly. Acrylics is not hard to work with, nor is it any harder to work with than wood IMHO. While it may not be the proper acrylic needed for aquarium proojects, it works the same as plexi, and that is lexan (Polycarbonate). You can get it at most nay big box store and its cheap., Buy some of it and practice and experiment. Order some Weldon #4 or 16 and have a go at making a box and other items.........do not use silicone as its not any good for much of anything with acrylics......Unless you can justify it, its hard to spend money for a router with proper bits, and a table or other saw, just to make a acrylic tank.....now if those items are gonna be used for other things then thats different. Contrary to what others may say, none of us here knows your skills and ability and tool inventory, so only you can answer that. But give it a try with cheap lexan and see if its what you really want to try.