Remove Stains from a Fish Tank

Fish are pleasant to look at and relatively easy to care for  compared to our quadraped friends. Some varieties are hardy enough to live for quite awhile, as long as they aren't "accidentally" dropped down the disposal, where the only option is generally to turn on the fawcett, flip the switch, and wish Nemo well. Others, however have an exceptionally short life span, barely making in out of the plastic bag from the county fair, before calling it quits and going belly-up. Regardless of what kind of fish you have, those that live a long time or those you have to replace weekly, the tank will eventually get cruddy and stained.

Image of removing stains for a fish tank cleaning

Cleaning Your Fish Tank

What you will need to clean the stains from the sides of your tank are the following:

  • A bowel or caontainer for your fish
  • Spray bottle
  • Clean cloth
  • Equal parts white vinegar and water

After removing your fish and the dirty water from the tank (per water change instructions specific to your fish) perform the follwoing steps to rid your tank of the stains:

  1. Mix water and vinegar in spray bottle.
  2. Spray stained areas and allow to sit for 10-15 minutes.
  3. Wipe off with cloth.
  4. Repeat process until stain is gone.
  5. Rinse thoroughly with clean water, before replacing fish.

These instructions, although they might sound too simple, do actually work to remove all sorts of stains and other marks from a dirty fish tank. We have experience cleaning hundreds of fish tanks using this method and have only run into issues a few times.

The Fish Tank Won't Come Clean Still?

This could be considered an emergency, but don't worry. Simply try these steps to get the fish tank glass clean: 

  1. Put fish into a large bowl or bucket where they will be safe
  2. Empty the water from the acquarium
  3. Remove all objects from the acquarium
  4. Fill the tank roughly 1/3 with hot water
  5. Add 2 squeezed lemon and 1 TBSP of dish soap
  6. Stir vigorously and let soak for 20 minutes
  7. Scrub all sides of the fish tank vigorously with a scrub brush
  8. Drain liquid into the bath tub or somewhere it can be safely drained
  9. Rinse until all soap and liquid is removed
  10. Prepare tank for fish habitat

These 10 steps should help you simply and effectively clean your fish tank if all else fails. Feel free to leave us a note or message if you are having issues and we'll help you get your fish tank clean.