Question 1

How deep can the filter be submerged?

Accepted Answer

The filter is submersible and can be fully submerged at any depth in a tank up to about 70cm deep, but the outlet should remain below the water surface to avoid splashing, unless you use the wavemaker outlet which can be adjusted.

Question 2

What size powerhead is this equivalent to?

Accepted Answer

At maximum flow, the hygger pump moves roughly 350 GPH, similar to a small powerhead like the Hydor Koralia 425, but it also provides filtration. At minimum flow, it drops to about 100 GPH, making it more versatile than most powerheads.

Question 3

Does the filter come with a warranty?

Accepted Answer

Most retailers indicate a 1-year warranty from hygger, but check the specific listing. hygger also offers customer support via email for defective units.

Question 4

Can I use this filter in a sump system?

Accepted Answer

It's not designed for sump use; it's an internal filter for placing inside the display tank. Using it in a sump would be redundant and could cause it to run dry if the sump water level fluctuates.

Question 5

Is it possible to use the wavemaker function without the filter?

Accepted Answer

No, the wavemaker is integrated with the filter pump. If you stop the pump, the wavemaker output stops too. You can, however, turn off the aeration valve while keeping the water flow for silent circulation.

Question 6

Can I replace the media with my own sponges / bio rings?

Accepted Answer

Yes, the media chambers are standard sizes and you can swap in any cut-to-fit coarse sponge, bio ring, or carbon. Many users replace the carbon with filter floss or ceramic media for better biological filtration.

Question 7

Does this filter create a strong current at the lowest setting?

Accepted Answer

The lowest setting produces a gentle output approximately 100 GPH (flow meter tested), which is fine for larger tanks. For 30-gallon tanks with species like angelfish, it's still noticeable but not disruptive. For tiny nano tanks, avoid this filter.

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hygger Aquarium Internal Filter for 30-80 Gallon Tank, Flow Rate Adjustable 4 in 1 Submersible Fish Tank Filter with Aeration System,Filtration/Oxygenation/Waveker/Circulation 18W (for 30-80 gallon)	⭐ 3.8	—	Current
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hygger Aquarium Internal Filter for 30-80 Gallon Tank, Flow Rate Adjustable 4 in 1 Submersible Fish Tank Filter with Aeration System,Filtration/Oxygenation/Waveker/Circulation 18W (for 30-80 gallon)

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Flow adjustment

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