Why Is My Betta Fish Obsessed With Filter?

Why Is My Betta Fish Obsessed With Filter

This site does not constitute pet medical advice, please consult a licensed veterinarian in your area for pet medical advice.

It is not uncommon to see your betta hanging around near the filter. I have seen many bettas obsessed with the filter. Either they try to swim against the current or just hang around near the outlet of the filter. Why bettas are obsessed with filter?

Bettas like to hang around near the outlet of the filter because that spot has a good flow rate. A good flow rate means that spot has more oxygen than the rest of the tank. This makes breathing easier for the betta.

Bettas also like to swim against moderate current. This is one kind of entertainment for them. However, if the betta struggles to swim straight, that means the current is too strong for him and you need to do something immediately.

Is The Betta Struggling To Swim Near The Filter?

Look closely when the betta is swimming against the current of the filter outlet. Is it swimming straight? Is there any sign of struggle?

If you see the betta is struggling, then it is an indication that the filter flow rate is too strong. You need to reduce it immediately. That is not a problem with most modern filters as they come with an adjustment knob.

Just adjust the knob to your desired flow rate. However, if your filter doesn’t have an adjustment knob then what to do? Well, the best option will be to buy a better filter with adjustment knob.

But, if you don’t have the budget, there are some things you can do to tone down the flow rate significantly.

In the next section, I’ll talk about some of the DIY ways to reduce the filter flow rate.

Need To Talk With A Vet Right Now?

Reducing The Filter Flow Rate

Before discussing some of the DIY ways to reduce the filter flow rate, let me start by saying that the best way to reduce the flow rate is by using the adjustment knob. Most filters these days come with an adjustment knob.

If your filter doesn’t, chances are it is not a very good quality product and you might need to upgrade your filtration system.

With that being said, let’s look at some of the DIY ways to reduce the filter flow rate:

Use Pre-filter sponge

The first thing you can do is use a sponge on the inlet of the filter. Inlet is the opening of the filter inside the aquarium through which water enters the filter. If you can reduce the rate of water entering the filter, then it will automatically reduce the filter flow rate.

If you don’t have any sponge lying around, just take a piece of filter floss, cut it into a small rectangle and wrap it around the inlet. It will also act as a fantastic mechanical filtration.

Stuff Filter Floss Inside

If the filter flow rate is still too much, stuff some filter floss inside the filter chamber. Most HOBs have a divider inside their chamber. The divider divides the chamber into two compartments.

Water gets collected into the first chamber and then enters the second chamber through some kind of hole or notch at the top. At the second chamber, there are all types of filter media.

You can put some filter floss over the hole or notch through which water enters the second chamber from the first chamber. This second piece of filter floss will also create some kind of barrier in the water’s path and reduce the filter flow rate.

Create A Baffle

This is the best DIY method to reduce filter flow rate. However, it needs some working. You’ll need to have a plastic bottle first.

Cut the top and bottom of the bottle with a sharp scissor, also make sure the bottle length matches the length of the filter outlet.

Now, cut the bottle lengthwise so that it is no longer a tube. After that, you’ll need to attach the bottle to the filter outlet so that water first hits the side of the bottle and then falls down. The process is much easier to show than explain. If you are confused, just watch the above video.

This method will significantly reduce the filter flow rate. However, it doesn’t look good and may need frequent maintenance.

If you ask me, I’ll always recommend to buy a good filter that comes with adjustable flow rate options.

About Muntaseer Rahman

Latest posts

  • Can Chameleons Be Constipated? + Pro Tips

    Can Chameleons Be Constipated? + Pro Tips

    You probably have already seen hundreds of dirty reptiles in enclosures. Well, we bet you can’t say the same thing about chameleons as they’re relatively clean. But is your one looking too clean, like not even a single poop around? Hold on a second! Is your reptile constipating? But can chameleons be constipated?  Chameleons do […]

    Read more

  • Can Halfmoon Betta Fish Live Together?

    Can Halfmoon Betta Fish Live Together?

    Who doesn’t want to rise multiple Halfmoon betta together, which can spread their tails at 180 degrees angle? Considering the temperament, the betta hobbyists wonder whether Halfmoon betta can coexist in the same aquarium. So, a common question arises- can Halfmoon betta fish live together? Since Halfmoon bettas are social creatures, these fish can live […]

    Read more

  • How Often Do You Feed A Halfmoon Betta?

    How Often Do You Feed A Halfmoon Betta?

    The sound health and longevity of your stunning Halfmoon betta depend on a nutritious diet and a proper feeding schedule. If you own such a beautiful species of betta that can spread its tail at 180 degrees, you may want to keep these Halfmoon bettas healthy. For this, the owners often ask in betta forums- […]

    Read more