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How to Upgrade a Top Filter fish tank to a Bottom Filter: A Comprehensive Guide with Step-by-Step video tutorial

Upper filter fish tank how to change filter video filter fish tank how to change filter video tutorial Blue-backed Arowana

Keywords: top filter, bottom filter, upgrade, fish tank, video tutorial


Upgrading your top filter Fish tank to a bottom filter can greatly improve the efficiency and effectiveness of your aquarium filtration system. In this comprehensive guide, we will walk you through the process of upgrading your fish tank filter, step-by-step. Additionally, we have included a detailed video tutorial to provide you with a visual demonstration of the entire process. So, let's dive in and learn how to upgrade your top filter fish tank to a bottom filter!

Section 1: Understanding the Difference between Top Filter and Bottom Filter

Before we proceed with the upgrade, it's important to understand the key differences between a top filter and a bottom filter. A top filter, also known as a hang-on-back filter, is attached to the back of the aquarium and pulls water from the top, filtering it as it flows back into the tank. On the other hand, a bottom filter is placed at the bottom of the tank and draws water through a substrate or media, providing a more thorough filtration process.

Section 2: Gather the Necessary Equipment

To upgrade your fish tank filter, you will need the following equipment:

1. Bottom filter system (such as a sponge filter or undergravel filter)

2. Air pump and airline tubing (for certain types of bottom filters)

3. Substrate or filter media (depending on the type of bottom filter chosen)

4. Water testing kit (to monitor water parameters during and after the upgrade)

Section 3: Step-by-Step Guide to Upgrading Your Fish Tank Filter

Now, let's go through the step-by-step process of upgrading your top filter fish tank to a bottom filter:

Step 1: Prepare your aquarium

- Remove any decorations, fish, or plants from the tank and place them in a temporary holding tank.

- Drain a portion of the water to make it easier to work with.

Step 2: Remove the top filter

- Turn off the top filter and unplug it from the power source.

- Carefully detach the filter from the back of the tank and set it aside.

Step 3: Install the bottom filter

- Depending on the type of bottom filter chosen, follow the manufacturer's instructions to install it at the bottom of the tank.

- If using a sponge filter, connect the air pump and airline tubing to the filter.

Step 4: Add substrate or filter media

- If using an undergravel filter, place the substrate on top of the filter plates.

- For sponge filters, add the recommended filter media to the sponge.

Step 5: Reassemble the aquarium

- Carefully place the decorations, plants, and fish back into the tank.

- Fill the tank with the saved water or fresh dechlorinated water.

Step 6: Monitor and adjust

- Turn on the bottom filter and air pump (if applicable).

- Monitor the water parameters regularly using a water testing kit and make any necessary adjustments to maintain optimal conditions.

Section 4: Video Tutorial - How to Upgrade a Top Filter Fish Tank to a Bottom Filter

To further assist you in the process, we have created a detailed video tutorial that provides a visual demonstration of each step. Please refer to the video for a more comprehensive understanding of the upgrade process.


Upgrading your top filter fish tank to a bottom filter can significantly enhance the filtration efficiency of your aquarium. By following the step-by-step guide and watching the accompanying video tutorial, you can easily perform this upgrade and provide a healthier and cleaner environment for your aquatic pets. Enjoy your newly upgraded bottom filter fish tank!


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