In fact, do not ever use tap water on acrylic; not to wipe; not to wash. Since sodium thiosulfate is plastic safe, wipe down a new acrylic tank with sodium thiosulfate first. A thin layer will be trapped on the surface just as chloramine will. This will protect the acrylic surface from chlorine exposure in the future.
Super white acrylic my ass, more like chlorine burnt as a result of washing with tap water. Apply chloramine breakdown frequency (204.328 Hz) to it, maybe it will turn 'super clear'.
Good night...