What size replacement filter cartridge for this unit...small, med?

The Tetra Bio-Bag Large (formerly known as Regular) are the exact same as the filter bag supplied with the Tetra Whisper In-Tank filter 20i. I got both from Amazon: filter $11.89; 12 cartridges $12.28. These filters last a long time, can be cleaned and reused. For my purpose, this filter has been great.

Where can I just get the Bioscrubber?

Hello. You can get it at a pet store, amazon has some, grocery stores with a pet section...they are pretty easy to find.

Would a small fish get sucked up in this filter? I have a 2 month old beta who is just recently getting color fins but still very small

Yes. I had 4 neon tetras and all 4 ended up getting sucked into the filter and the spinning fan mechanism blended them into multiple pieces. It happened the first night, I woke up and 4 fish were missing. I found them in the filter :(

Would this filter be too strong for a Betta in a 10 gallon tank?

Yes, it would be fine. It is rated at 90 GPH which is the appropriate flow rate for a 10 gallon tank. Bettas are not the strongest swimmers, it is true, but typically handle filtration fine, as long as it is placed at one end of the tank so they have room to move away if necessary. They eventually adapt and will often play in the flowing water. Initially, you might want to place tall plants or tall décor in front of it to break up the flow until the betta becomes accustomed to it. For additional assistance, please call the Tetra Consumer Relations Team at 1-800-526-0650.

Tetra Aquarium Filter Aq 78056 Up To 4 Gallons

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Description

💦 Keep it clean, keep it serene!

COMPACT DISCREET - Designed to fit flush against your tank, blending seamlessly with your decor.
ALL INCLUSIVE PACKAGE - Comes with everything you need for easy setup and maintenance.
DUAL FILTRATION SYSTEM - Combines floss and activated carbon for crystal-clear water and odor removal.
EFFICIENT WATER CYCLING - Cycles your 4-gallon aquarium over 6 times per hour for optimal health.
WHISPER QUIET OPERATION - Enjoy a serene aquatic environment without disruptive noise.

The Tetra Aquarium Filter (AQ-78056) is designed for 4-gallon aquariums, featuring a powerful 27 GPH pump that ensures efficient water cycling. Its dual filtration system captures debris and eliminates odors, all while maintaining a compact design that fits discreetly against your tank. This all-in-one package includes everything needed for a hassle-free setup.

Specifications

ASIN	B07JC6LST2
Brand	Tetra
Brand Name	Tetra
Colour	Blue
Customer Reviews	4.0 out of 5 stars 5,192 Reviews
Global Trade Identification Number	00046798780564
Included Components	See label
Item Type Name	Aquarium Filter
Item Weight	0.26 Kilograms
Manufacturer	Spectrum Brands Pet LLC
Manufacturer Part Number	AQ-68056
Material	Plastic
Material Type	Plastic
Model Number	AQ-68056
Product Style	Up to 4-Gallons
Specific Uses For Product	Indoor
Style	Up to 4-Gallons
UPC	046798780564
Unit Count	1 Count

Reviews

D**N

25.04.2024

T**Q

7.04.2025

H**O

8.03.2026

S**S

21.06.2019

A**R

13.04.2026

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KD 13.78

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Tetra Aquarium Filter (AQ-78056),Up to 4-Gallons

Description

Specifications

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Common Questions