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How to Make a Biological Filter for Aquarium

How to Make a Biological Filter for Aquarium

Filters can be expensive. Sometimes, it is hard to find the right type of filter, especially if you have a large tank, or fragile fish (such as bettas). Because of this, many aquarium hobbyists choose to make their own filters. Watch the video below and learn a great way to easily create your own biological filter and materials available at any store!

Tips and tricks #1
Temperature can be raised slightly to increase the rate of reaction of biological and biochemical processes, thus speeding the development of a nitrifying bacteria population. Increase the temperature no more than 2 to 3 °C (3.6 to 5.4 °F) above the anticipated culture temperature to avoid a major die-off of bacteria when the temperature is reduced to operational levels. The total volume of a system can be reduced by operating the culture tanks with a lower water level during the start-up of the biofilter. With a smaller volume of water, temperature can be changed more quickly and the quantity of nutrients required for dosing the biofilter will be reduced, which makes the process more cost-effective.

Tips and tricks #2
Any materials you place in your canister filter to change the quality of the water are considered filter media. The conditions required in your specific aquarium will dictate which types of filter media you will need and also which order to pack them in. Yet the general guideline is based on removing ever-decreasing particle sizes while still maintaining the health of the beneficial bacteria.  Keep the basics in mind and experiment with combining different media types, but maintaining this overall order will achieve the best filtration for your aquarium.

Tips and tricks #3
Many aquarists use chemical media to remove toxins and alter water chemistry. When used properly, chemical media is placed in the final portion of the filter. If chemical media is placed first, it will become clogged and need to be replaced long before its chemical filtering properties are exhausted. More importantly, placing chemical media before the biological media means that what usually feeds the bacterial colonies will be removed prematurely, before reaching them. As a result, bacteria will be less likely to thrive in the biological filter media. Placing chemical filtration media at the last stage of the filter ensures the bacterial colonies are not affected.

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Written by Aleksandar

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Biofilter Medien (Deutsch)

Biofilter Medien (Deutsch)

Webinar on GLOBALG.A.P. Group Certification (Option 2)

Webinar on GLOBALG.A.P. Group Certification (Option 2)