How To Clean Betta Fish Tank Without A Filter

How To Clean Betta Fish Tank

Maintaining a healthy betta fish tank is essential to keeping your beloved finned pet happy.

Indeed, here are the steps rewritten for cleaning your Betta fish tank:

Step 1: Preparing for Betta Fish Tank Cleaning

  1. Wash your hands thoroughly.
  2. Put on gloves to protect your hands.
  3. Take out the tank’s decorations.
  4. Turn off all equipment and devices.

Step 2: Algae Removal in Your Tank

Step 3: Gravel Cleaning and Water Replacement

Step 4: Decorations Cleaning

Step 5: Filter Maintenance

Properly cleaning the tank regularly will ensure your betta is comfortable and safe from potentially harmful bacteria or debris that can build up over time.

In this blog post, I’ll explain how to properly clean a betta fish tank step-by-step so all owners can feel confident about properly caring for their pets’ homes. Maintaining a clean betta fish tank is essential to your pet’s health and well-being. 

Gathering Supplies

Before you start, gather the following supplies:

How To Clean Betta Fish Tank

Clean Bucket:

  • A clean bucket is a crucial tool for cleaning your betta fish tank. 
  • Choose a bucket only used for this purpose to avoid introducing harmful substances into the tank. 
  • This bucket will hold the old water during cleaning and fresh water for refilling the tank.

Gravel Vacuum:

  • A gravel vacuum is a handy tool for cleaning a fish tank. 
  • It helps remove dirt collected in the sand at the bottom of your tank. 
  • Using it, you can remove waste without disturbing your betta fish. 
  • It’s simple to use, even for beginners.

Algae Scrubber or Pad:

  • An algae scrubber or pad is a must-have tool for your cleaning kit. 
  • Over time, algae can build up on your tank walls, creating an unsightly green film. 
  • This scrubber allows you to gently remove this build-up without scratching your tank. 
  • It’s an easy and efficient way to keep your betta fish’s home clear and clean.

Water Conditioner:

  • The water conditioner is a crucial item in your cleaning kit. 
  • It makes tap water safe for your betta fish. 
  • It removes harmful stuff like chlorine from water. 
  • This keeps your fish healthy. 
  • Always use it when adding new water to the tank.

Fish Net:

  • A fish net is an essential tool for a fish tank cleanup. 
  • It helps gently move your betta fish to a safe place when cleaning. 
  • This makes the process less stressful for your pet. 
  • It’s essential to be careful and calm in this step to avoid hurting your fish.

Siphon Hose:

  • A siphon hose is used to remove water from your tank. 
  • It’s a simple tool that works like a giant straw. 
  • You use it to remove old water and then put it in clean water. 
  • This helps keep your fish happy and healthy. 
  • It’s easy to use; just be careful not to suck up any little fish by mistake.

Soft Sponge or Cloth:

  • A soft sponge or cloth is also needed for cleaning. 
  • It’s used for wiping the insides of the tank. 
  • The sponge cleans away dirt without scratching the glass. 
  • It’s easy to use. Dip it in water, gently wipe the tank’s sides, and rinse it clean. 
  • Remember, don’t use soap or strong cleaners. 
  • They can harm your fish.

How To Clean Betta Fish Tank

Preparing for the Cleaning Process

1. Turn Off Equipment

  • First, switch off all devices like the heater and filter to start the cleaning. 
  • This is important for safety. 
  • Next, unplug them from the wall. 
  • Now, you can safely remove these items from the tank. 
  • Be careful not to shock the fish. 
  • Make sure your hands are clean and dry before touching any electrical equipment.

2. Remove the Betta

  • Use your fish net to catch your betta fish carefully. 
  • Be gentle and slow to avoid scaring your pet. 
  • Once you have your betta in the net, move it to the clean bucket filled with tank water.
  •  This gives your betta a safe place during cleaning.

3. Remove and Clean Decorations

  • Next, slowly take out any decorations, like plants or rocks. 
  • Rinse them with warm water. 
  • Don’t use soap because it can harm your fish. 
  • Use a soft brush to scrub off any dirt or algae gently. 
  • When they are clean, put them aside on a clean towel to dry.

4. Clean the Substrate

  • Now, it’s time to clean the bottom of the tank or the substrate. 
  • Use your sand vacuum to suck up any waste or leftover food. 
  • Move it slowly to clean every part. 
  • Be careful not to mix up the gravel too much, as it might upset your betta when it returns.
  • After cleaning, you can start putting back the decorations in their place.

5. Scrub the Glass

  • Now, use a soft cloth to clean the glass. 
  • This removes algae or other build-ups. 
  • Be gentle to avoid scratching the glass. 
  • Start from the top and work your way down. 
  • Always wash away the sponge in clean water. 
  • This helps keep your fish’s home crystal clear.

6. Wipe Down the Tank

  • After scrubbing the glass, wipe down the tank. 
  • Use a clean, damp cloth for this task. 
  • This will remove any water spots or dust on the outside. 
  • Avoid soap or hard cleaners for this task, as they can harm your fish.

7. Partial Water Change

  • Now, you’ll do a partial water change. 
  • Use a siphon hose to remove around 25% of the tank water. 
  • Replace it with fresh, room-temperature water that’s been conditioned.
  • It should match the tank’s temperature. 
  • This keeps the water clean and safe for your betta fish, ensuring a happy and healthy pet.

8. Treat the Water

  • Once you’ve replaced the water, treating it using a water conditioner is essential. 
  • Removing harmful elements like chlorine makes tap water safe for your betta fish. 
  • Simply follow the instructions on your water conditioner bottle to know how much to use.
  • After adding it, stir the water gently to mix it in. 
  • This step ensures your fish returns to a clean, safe, and healthy environment.

9. Refill the Tank

  • Now, slowly refill the tank with the conditioned water. 
  • Carefully pour the water to avoid disturbing the gravel or decorations. 
  • Once filled, reconnect and turn on all the equipment. 
  • Make sure the water is at the same temperature as before. 
  • Now, gently put your betta fish back into the tank. 
  • You’ve completed a safe, effective cleaning of your betta fish tank.

10. Acclimate Your Betta

  • The final step is to adjust your betta. 
  • Slowly introduce your betta back to its tank. 
  • Do this carefully so it can adjust to the new water conditions. 
  • This step is very vital because sudden changes can stress your fish. 
  • Always be gentle and patient during this process for a healthy, happy betta.

11. Gradual Reintroduction

  • After the tank cleaning process, gently reintroduce your betta to the tank. 
  • Move slowly to let your fish get used to the new water. This is important.
  • Quick changes can scare your fish. Always be calm and patient. 
  • This helps keep your betta happy and healthy. 
  • You’ve cleaned your betta fish tank the right way.

How To Clean Betta Fish Tank

How to Deep Clean a Betta’s Tank

Deep cleaning a betta’s tank is crucial for the health and happiness of your pet. Here are the simple steps to do it:

  1. Remove Your Betta:

Use a fish net to gently move your betta to a separate container with some tank water.

  1. Empty the Tank:

Carefully pour out the water from the tank. Make sure to do this slowly to avoid breaking the tank.

  1. Remove Decorations and Substrate:

Take out all plants, stones, and other decorations. Remove the substrate (gravel, sand) from the bottom of the tank.

  1. Clean Everything:

Rinse the decorations, substrate, and the tank itself with warm water. Use a soft brush to remove any stubborn dirt or algae. Remember, don’t use soap or chemical cleaners.

  1. Dry Everything:

Let everything dry completely. This helps to kill off any remaining bacteria.

  1. Put Everything Back:

Replace the substrate and decorations. Make sure to arrange them just like they were to make your betta feel at home.

  1. Refill the Tank:

Fill the tank with fresh, dechlorinated water. Make sure the water temperature matches the original tank water.

  1. Return Your Betta:

Slowly introduce your betta back into the tank. Be patient and give your betta time to adjust to its clean home.

Supplies Needed for Cleaning Your Betta Tank

To clean your Betta tank properly, you need the right supplies.

  1. Fish Net: This gently catches your Betta fish before cleaning. It needs to be soft to avoid hurting your fish.
  2. Bucket: You need a clean bucket to hold your Betta fish during cleaning.
  3. Substrate Vacuum: This tool helps clean the tank bottom. It removes waste and leftover food.
  4. Soft Sponge or Cloth: These are used for cleaning the glass of your tank without scratching it.
  5. Brush: A soft brush will help clean the decorations in your tank.
  6. Water Conditioner: After changing the water in your tank, you’ll add a water conditioner. This makes tap water safe for your Betta fish.


A clean tank is a happy place for your betta fish. With the right tools, it can be easy to clean the tank. First, gently take your betta out with a soft net. A clean bucket filled with tank water is a good place for your betta to stay during cleaning. Use a vacuum to clean the bottom of the tank. A soft sponge or cloth is good for cleaning the tank’s glass. Be gentle so you don’t scratch it. Then, use a brush to clean the decorations. When you’re done, add fresh water with a water conditioner. Then, you can put your betta back.


How Often Do You Clean A Betta Fish Tank Without A Filter?

It would be best to clean a betta fish tank without a filter at least once weekly.

This keeps the water clean and safe for your fish.

Regular cleaning also gets rid of waste and uneaten food.

Always carefully replace the water with fresh, conditioned water to keep your betta healthy.

How Long Do You Wait To Put Betta Fish In The Tank After Cleaning?

After cleaning your betta fish tank, wait at least one hour before putting your fish back.

This gives time for the water conditioner to work and the temperature to become stable.

This way, your betta fish will have a safe and clean home to return to.

What Can I Put With My Betta Fish To Clean The Tank?

You can use a cloth to clean the tank’s glass.

A soft brush can be used to clean decorations and plants.

A vacuum can help clean the substrate.

Always use a water conditioner to make tap water safe for your betta after cleaning. Remember, never use soap or chemicals; they can harm your betta.

How To Clean Betta Fish Tank Without Siphon?

Cleaning a betta fish tank without a siphon is simple.

First, take your fish out and put them in a safe place.

Empty the tank, then remove and clean the decorations.

Scrub the tank with a cloth. Put everything back and fill it with clean water.

Don’t forget to add a water conditioner before putting your fish back.

How Do You Clean A Betta Fish Tank Without A Vacuum?

Cleaning a betta fish tank without a vacuum is easy.

First, take your betta out of the tank.

Then, dump out the water. You then take out the things like plants and rocks.

Clean these things with water. Scrub the tank clean with a sponge or cloth.

Put everything back in the tank.

Fill the tank with clean, safe water.

Then, your betta can go back into the tank.

Can We Use Boiled Water For Betta Fish?

Yes, you can use boiled water for betta fish, but it needs to cool down first.

Boiling helps remove harmful stuff from the water.

But you still need to add a water conditioner.

It makes the water safe for your betta fish.

Always check the water’s temperature before putting your betta back in.

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