How Long To Boil Rocks For Aquarium? Aquarim Advice

How long to boil rocks for aquarium

An unclean aquarium will affect the growth and health of fish. In this article, Aquatic 247 will show some methods as well as answer some questions: How long to boil rocks for aquarium? How to clean fish aquarium rocks?

Benefits of boiling rocks for aquarium

Below are some of the key benefits we have compiled.

Remove harmful bacteria

Boiling water is a method that can kill bacteria. The same thing happens with rocks. Ice can contain harmful bacteria. These can enter your tank and harm your fish. Boiling stones ensure a bacteria-free and safe environment.

Remove chemical

Some types of rocks can react with water. For example, calcite can change the pH of water. Therefore, boiling can help you verify this by observing the water’s color. If the water turns green, the rock may not be safe.

Improve aesthetics

Boiling rocks can be cleaning aquarium rocks. So, this makes the rocks look shiny, giving the aquarium an improved aesthetic.

Guaranteed safety

Rocks contain air pockets. These can trap either air or water. Over time, this might erode the rock. Boiling water causes the air pockets to release trapped air. This makes the rock more stable. It stops the rock from breaking and injuring your fish.

How long to boil rocks for aquarium
How long to boil rocks for aquarium

Easy maintenance 

Boiled rocks require less upkeep. You will have to clean less as a result. It requires less work to keep your fish tank looking great.

The guide boiling rocks for aquarium


You need some of the following items to make the boiling process go smoothly.

  • Rocks for your fish tank: lava, calcite, and smooth rocks are popular choices.
  • A big pot of water
  • Heat source
  • Gloves and tongs


  • Cleaning rocks: Get the rocks clean before boiling. Rinse off any dirt or debris with tap water. The rocks are ready for the boiling process in this phase.
  • Boiling rocks: Put some water in a pot and heat it. When the water reaches a boiling point, gently add the rocks. When handling hot rocks, wear gloves or tongs. For 10 to 20 minutes, boil. This eliminates any air pockets and destroys bacteria.
  • Testing rocks: Let the rocks cool in the hot water once they have boiled. Next, determine the pH of the water. The rock might not be suitable for your tank if the water turns green. Understanding the tank debate requires completing this stage.
  • Placing rocks: Put the rocks in your fish tank when they have cooled and dried. Take this opportunity to arrange them to improve your tank’s overall appearance.

How long to boil rocks for aquarium?

How long to boil rocks for aquarium? 10 to 20 minutes is the most ideal time to kill harmful bacteria.

Fill a pot with water and heat it until it boils. Make sure the rocks are completely submerged before adding them. The rocks in your fish tank are safe and clean thanks to boiling water. Allow the rocks to cool after they have boiled. They are then prepared to improve your aquarium’s aesthetic appeal and security.

How do you clean rocks for aquarium?

There are three basic and popular methods for cleaning fish tank rocks: the vinegar method, the peroxide method, and the bleaching method.

Vinegar method 


  • Vinegar
  • Tap water
  • Scrub brush
  • Empty spray bottles


  • Step 1:Remove rocks from your aquarium
  • Step 2: Fill a spray bottle with a 50/50 mixture of water and vinegar
  • Step 3: Spray to evenly coat the ice in the vinegar mixture and wait 5 minutes
  • Step 4: Scrub the surface vigorously with a brush and rinse with water (Repeat if necessary)
  • Step 5: Safely return the rocks to the aquarium after cleaning

Peroxide method 


  • 3% hydrogen bottles
  • Spray bottles are empty
  • Scrub brush with plastic bristles
  • Tap water


  • Step 1: Pour hydrogen peroxide into a spray bottle
  • Step 2: Remove rocks from the aquarium
  • Step 3: Spray peroxide all over the surface of the stone and let it bubble for about 1 minute
  • Step 4: Scrub the stone with a brush and continue to let it foam (A little peroxide can be added if the foam has reduced)
  • Step 4: Rinse the stone with tap water
  • Step 5: Return the rocks to the aquarium after rinsing them thoroughly with tap water

Bleach method



  • Step 1: Remove rocks from your aquarium and place them in a bucket
  • Step 2: Mix 1 part bleach with 20 parts tap water
  • Step 3: Dip the stones in the bleach solution in the bucket for 2 minutes, then pull them out and give them a quick scrub
  • Step 4: Place the rocks back in the bucket and fill with clean tap water. Add dechlorinator (5 times the usual dose) to the water and let the stones soak for about 10 minutes. This will remove any remaining bleach residue
  • Step 5: Once the rock is clean, you can return it to the aquarium

In conclusion

That sure you know the answer to the question: How long to boil rocks for aquarium? While there are alternative methods, boiling rocks for aquarium is still a recommended method to keep your tank safe and beautiful.