How to Clean a Fish Tank | Betta & Filter Cleaning Guide

How to Clean a Fish Tank the Right Way: Step-by-Step Guide for a Healthy Aquarium

Keeping your aquarium clean is essential to a healthy, thriving aquatic ecosystem. Whether you’re caring for a community tank or a single betta, learning how to clean a fish tank properly prevents algae buildup, odors, and stress for your fish.

In this guide, you’ll learn:

  • How to clean a fish tank step-by-step

  • How to clean a betta fish tank safely

  • How to clean a filter in a fish tank the right way

You’ll also discover two smart aquariums designed to make cleaning easier than ever.

🌊 How to Clean a Fish Tank

  1. Turn off equipment – Unplug your filter, heater, and lights.

  2. Move your fish into a clean container with their existing tank water.

  3. Use a gravel vacuum to remove 25–30% of the water.

  4. Clean the glass and decorations to remove algae.

  5. Rinse gravel and décor in tank water only — never use soap.

  6. Refill the tank with dechlorinated, temperature-matched water.

  7. Plug equipment back in and monitor your system.

💡 For easy maintenance, check out the LED Aquarium Fish Tank with Silent Pump Filtration System.
Its built-in filtration system keeps your water cleaner for longer, meaning fewer water changes for you.

🐟 How to Clean a Betta Fish Tank

Betta tanks are smaller, which means they need cleaning more frequently — usually once a week.

  1. Gently remove your betta using a small cup.

  2. Change about half the water to maintain stable conditions.

  3. Wipe the glass and rinse any ornaments with tank water.

  4. Add treated, temperature-matched water before reintroducing your betta.

If your betta has outgrown its bowl, upgrade to the 20 Gallon Fish Tank.
It features a self-cleaning 5-layer filtration system and smart remote feeding, making aquarium care effortless.

⚙️ How to Clean a Filter in a Fish Tank

Your filter is the heart of your tank, so cleaning it correctly is key.

  • Turn off and remove the filter before cleaning.

  • Rinse the filter media gently in tank water (not tap water).

  • Replace media only when necessary — to preserve beneficial bacteria.

  • Wipe the housing and impeller to remove debris.

For low-maintenance filtration, the LED Aquarium Fish Tank includes a silent pump filtration system designed for quiet, continuous cleaning.

💧 Expert Tips for a Crystal-Clear Tank

  • Perform 20–30% water changes weekly.

  • Avoid overfeeding, which increases waste and algae growth.

  • Test your water for pH, ammonia, and nitrate levels regularly.

  • Choose a larger tank like the 20 Gallon Fish Tank for better stability and easier maintenance.

❓ Frequently Asked Questions

How often should I clean my fish tank?

For most aquariums, clean once every 1–2 weeks. Smaller tanks may need cleaning weekly.

Can I clean a fish tank with tap water?

Yes — but always treat tap water with a dechlorinator before refilling your tank.

Should I remove my fish while cleaning?

Only for deep cleans or large water changes. For partial changes, it’s safe to leave them inside.

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