I am upgrade from 120g acrylic to 240g acrylic due to the size and weight, so far my 120g doesn't leave any mark on my hardwood floor, I am using a moving pads on the bottom of fish tank stand on 120g so far so good, now with 240g I don't know if the pads would stand for over 2003lbs, would it leave a big mark on my floor? what is your advise for hardwood floor?