



🧜♂️ Elevate your aquarium game with silent, safe, and sleek filtration!
The AQUANEAT Middle Bio Corner Sponge Filter features a unique quarter-cylinder shape that enhances water and oxygen exchange, providing both mechanical and biological filtration. Designed with soft sponge material, it ensures safety for small and delicate fish species by minimizing current and preventing fish suction. Easy to install and clean, this compact filter fits tanks up to 15 gallons, making it an ideal choice for breeding, maternity, and nano fish tanks.









| ASIN | B078X74T9M |
| ASIN | B078X74T9M |
| Best Sellers Rank | #13,679 in Pet Supplies ( See Top 100 in Pet Supplies ) #113 in Aquarium Filter Accessories |
| Brand Name | AQUANEAT |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,074) |
| Date First Available | January 9, 2018 |
| Date First Available | January 9, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Package Dimensions L x W x H | 4.33 x 2.44 x 2.44 inches |
| Item Weight | 6.1 ounces |
| Item model number | SF-A229 |
| Item model number | SF-A229 |
| Manufacturer | AQUANEAT |
| Manufacturer | AQUANEAT |
| Package Dimensions | 4.33 x 2.44 x 2.44 inches; 6.07 ounces |
| Size | Middle up to 15Gal |
| Target Audience Keyword | fish |
H**H
Good Filter for a 5.5 Gallon Tank
The small size (up to 10 gallons) is perfect for a 5.5 gallon betta tank. It's quite small so it doesn't take up too much room. It'd be easy to hide in a planted tank or with some driftwood. The base is heavy and it stays at the bottom after the sponge fills with water. I paired it with the Nicrew Air Pump and it's working great.
A**N
Good shrimp tank filter
Works well with the micro hygger air pump. It’s doing a great job keeping a 5.6 gal tank clear and clean.
J**D
Best for small tanks!
This sponge filter is PERFECT for smaller tanks!! I have had it in a 3 gallon betta tank, and now have one in his upgraded 6 gallon. Since it's a short and stout sponge, it's easy to hide with plants and hardscape! Works great at keeping the tank clear and clean, and doesn't make much noise on top of that. Would 100% get again.
W**2
Sponge filter
Works fine. A bit on the light side though, and needs persuasion to stay down.
S**K
Very nice filter, sponge is too coarse for fragile betta fins
Very nice set up but the sponge is too coarse for my betta. I like the set up thigh, so I’ll be buying a large, round, super soft refill sponge to put on it.
J**H
Great option
Works great love the design!
B**2
Nice
Works great in shrimp tanks
B**1
Ok
I looked at measurements prior to purchase but this is much larger than what I had expected. Since it’s 1/4 cylinder and fits in corner it only works on the one side. 40 Gph will work for a 4 gallon tank and it is way too big to fit. The only reason I purchased it was to add additional oxygen to my tank temporarily while fighting a hair algae issue but an air stone won’t work with it!! So that was useless. Also there is no place for adding other filter medium. A small round one would work as well and be much less obtrusive.
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