Have you ever had an acrylic tank? There are many reasons that acrylic is nice...
- it's lighter
- it's is clear, glass has a green tint
- it is a better insulator than glass
- shatter proof (2yr olds and hammers don't mix)
- did I mention it's lighter
Now that I've said all that, let me say I've owned an acrylic tank and I will
never own another one. For all the good points it has, there is one you will curse it for, forever....it scratches, almost if you just look at it. The only acrylic tank I will use is a sump tank, It is inevitable that you will scratch the inside of the aquarium and to buff out the scratches, you have to drain the tank, it is a b***h! Most of the time you simply won't do it, but when you do, you will curse the day you purchased an acrylic tank.
IMHO. If this is something your dead set on, then I wish you the best of luck (especially when cleaning algae off the sides).