How to remove the stains left by the glass after the background plastic paper on the fish tank is taken out

There are several ways to remove the stains left by the plastic paper on the glass of the fish tank background:

1, physical method:

(1) Wet the stain with water and polish it with steel balls. (Note: Be careful not to scratch the glass! )

(2) Use a paper cutter to flatten along the stain direction.

2. Chemical method: Dip a cotton swab or cotton ball in an organic solvent such as alcohol, thinner or gasoline, gently wipe the stain, and then clean it with water.