How To Remove Scratches From Glass Aquariums

glass aquarium tank
Our guide covers all you need to know when it comes to removing scratches from your glass aquarium. We cover what you need to get the job done and a step by step guide on the best way to do it.

When your aquarium gets all scratched up, which it probably will after some time, the whole aesthetic thing kind of starts to disappear. Scratches in your glass aquarium are going to take away from the overall beauty of it without a doubt.

Of course you don’t want to have to buy a brand new aquarium If you don’t need to. So, how do you remove scratches from glass aquariums? It’s not actually a difficult job but there are a few things that you will need to get the job done.

What You Need To Remove Scratches From Your Glass Aquarium

Here are the things you will need to remove the scratches once and for all. Keep in mind, small and tin scratches are easy to fix on your own, but bigger and deeper scratches are going to be difficult and time consuming to fix, so you might want to get professional help doing it.

  • Spray bottle.
  • Electric drill (or orbital sander).
  • Buffing pad.
  • Hard rubber disk.
  • Cloth.
  • Masking tape.
  • Plastic wrap.
  • Marking crayon.
  • Holding tank.
  • Cerium Oxide polish.

Steps By Step Guide To Remove Scratches

In order to remove the scratches from your glass aquarium, just follow these simple steps and they will be gone in no time at all.

  1. Buy a little container of cerium oxide polish. This is a material often used to polish jewelry, but can also be used to buff out small and medium sized scratches in aquarium glass.
  2. Remove enough tank water so you can get to the scratch. This might mean draining all of the water, in which case you will need to move your fish to a holding tank for safety.
  3. If there is any water left in the tank, cover it with plastic wrap to avoid getting any cerium oxide or other substances in the water. Use tape to secure the plastic wrap in place so it does not move or sink below the water line.
  4. Get yourself a hard rubber disk with a buffing pad and attach it to your electric drill.
  5. Follow the directions on the cerium oxide and mix it with water. Put the cerium oxide and water solution into a spray bottle for easy distribution.
  6. Cover the buffing pad with the cerium oxide solution. Get the pad nice and wet, but not so wet that it drips or flies all over the place when you turn the drill on.
  7. Turn the drill to its lowest setting and start buffing out the scratch. Press hard enough for decent pressure, but not so hard as to break the glass or shift the aquarium.
  8. If the glass is getting too hot from the friction of the drill and buffing pad, simply spray it with some water or some more of the cerium oxide solution to cool it down.
  9. Continue buffing the glass until the scratch is no longer visible.
  10. Use a clean cloth to wipe away any cerium oxide residue.
  11. Put the water and fish back into the aquarium.


When it comes to removing scratches from your glass aquarium, this is more or less the only way to get it done, not to mention the most effective by far. As long as you use the materials and follow the steps as described, you will have a perfectly clear and scratch free aquarium in no time at all.

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