Can you boil aquarium rocks

In this brief guide, we will address the query, “Can you boil aquarium rocks?” We will also discuss the main steps to boil aquarium rocks, when to boil the aquarium rocks and how to properly choose them.

So if you are interested to know more about this topic, stay tuned.

Can you boil aquarium rocks?

Yes, you can boil aquarium rocks before putting them into the water tank to clean them thoroughly and kill the pathogenic microorganisms that might be attached to them. 

Boiling does not require using soap or any other substance that might harm and even kill the fish inside and relies only on water.

Boiling aquarium rocks is an easy and safe way to sterilise these rocks without damaging them. 

This step will help maintain a clean aquarium environment for the fish’s health and survival and make sure that you do not introduce any type of fungi, bacteria such as hitchhiking, or parasites on an unsterilized rock and harm your fish.

However, you should always be aware that regular boiling of the aquarium rocks as a part of the normal maintenance routine can be a harsh step that leads to the destruction of the aquarium’s balanced ecosystem. 

Note that the latter is sustained by the presence of the beneficial or good bacteria that survive on the rocks.

What are the main steps for boiling aquarium rocks?

  • Pour water into a boiling pot
  • Place the pot on high heat and bring the water to a rolling boil
  • Place the aquarium rocks in the water and let them sit in the boiling water for 10-20 minutes to ensure the destruction of pathogenic microorganisms
  • Let the boiled rocks cool enough for at least 1 hour or until you can handle them
  • Dry the aquarium rocks completely before introducing them into the fish tank by simply putting them on paper towels or spreading them on a clean and dry surface under the sunshine to remove any excess water

When should you boil aquarium rocks?

The boiling process of your aquarium rocks is very important and essential for the sterilisation of your fish aquarium from a wide variety of harmful fungi, parasites, and bacteria that may inhabit and proliferate on these rocks 

 Aquarium rocks should be boiled in several cases to maintain a healthy and balanced environment for your fish, these cases can be summarised as follows:

  • new aquarium rocks must be always washed and boiled before using them for the first time and introducing them to your aquarium
  • aquarium rocks must be boiled as a part of good aquarium maintenance etiquette.
  • aquarium rocks as other contents must be boiled when you are having any new outbreaks or ongoing diseases in your aquarium
  • aquarium rocks must be boiled when you are having any recurring fungal growth problems
  • aquarium rocks must be boiled when you encounter an increased amount of abnormal fish fatalities

However, it is important to note that if your fish are living normally in a healthy way without any of the above-mentioned troubles and negative consequences. 

Then there is no need to boil the aquarium rocks or gravel or plants because in this case you will be disrupting the balanced ecosystem of your aquarium and harming it rather than fixing it.

How can you choose the aquarium rocks?

Aquarium rocks provide an attractive view and form a place for the beneficial bacteria to reside and perform their natural duty in the degradation of the food leftovers and fish wastes to keep the water in the aquarium clean and healthy.

So it is important to choose the suitable type of aquarium rocks and place them properly in the aquarium. 

Neutral rocks are a great choice because this type will not trigger any sudden alteration in the aquarium water parameters and chemistry that in turn stress your pet fish and be fatal.

On the other hand, you should note that rocks and especially porous rocks form an adequate medium for survival and growth of bacteria and parasites, as well as contamination by several pollutants. 

Therefore it is highly recommended to boil your aquarium rocks and disinfect them to ensure they are residue-free before introducing them to the tank for the safety of your fish 

For more detailed guidance, please click the link here


In this brief guide, we have addressed the query, “Can you boil aquarium rocks?” We have also discussed the main steps to boil aquarium rocks, when to boil the aquarium rocks and how to properly choose them.

Hope you found this blog useful. If you have any questions, please let us know.

References,should%20kill%20any%20unwanted%20 pathogens

Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.