i have both types of tanks, glass 90g and 65g acrylic. the acrylic scratches real easy especially if sand gets caught in the magnet cleaner. however with a acrylic you can get a scratch removal kit (aka fine sand paper) and remove them. i had to do this with my tank after the movers put all my equipment in it and shipped it. about 4 hrs of work and its like new. also with acrylic it can yellow with age. just another down side of it. as for clarity i don't notice much deferance between the glass and acrylic. also a plus side for the acrylic besides shapes sizes etc. is the acrylic wieghs less. just some little FYI
90g mixed reef, 12g nano, 3 dogs, 3 cats, 2 ferrets.
Driving the wife crazy.......PRICELESS.