I have a 40 gallon acrylic that is very funked up from the previous owner I got it for free so cant complain I just use it as a hospital tank and it does the job for that.
Are you asking if I said the sandpaper was aquarium safee? Because I was talking about the buffing and polishing compounds being non toxic...
But if you were wondering if the sandpaper was aquarium safe that is a good quaetion... All the glues and stuff they use on it does bring up that question.