best hang on filter for planted aquarium Aquarium Co-Op Coarse Sponge Filter Medium
SKU: 28210456849
best hang on filter for planted aquarium

best hang on filter for planted aquarium Aquarium Co-Op Coarse Sponge Filter Medium

Sale price$18.86 Regular price$20.95
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Description

best hang on filter for planted aquarium Aquarium Co-Op Coarse Sponge Filter MediumAir collar makes smaller bubbles for improved performance Easy Flow accessory increases water circulation Coarse, anti clogging sponge Sponge filters offer reliability and hassle free operation. With no moving parts, all you need is an air pump with some airline tubing, and you've got a filter that is fully contained within your aquarium. Sponge filters are completely reusable, don't need any replacement cartridges, and last for several years. Plus,

  • Air collar makes smaller bubbles for improved performance
  • Easy Flow accessory increases water circulation
  • Coarse, anti-clogging sponge

Sponge filters offer reliability and hassle-free operation. With no moving parts, all you need is an air pump with some airline tubing, and you've got a filter that is fully contained within your aquarium.  Sponge filters are completely reusable, don't need any replacement cartridges, and last for several years. Plus, they are gentle enough for betta fish, baby fry, shrimp, and other slow-moving species. Trusted by fish farms and wholesalers, they are an excellent choice for aquarium filtration that you can set and forget.

Read this article with step-by-step instructions or watch our detailed setup video.
Adjust the height of the Easy Flow curved tube so that the opening is 1/3 out of the water and 2/3 in the water. If you have a shorter tank (like a 10 gallon or a 20 long), please see the sizing chart below. Shallower tanks may require trimming of the Easy Flow uplift tube. 

Additional Supplies Needed

The sponge filter does not produce air on its own, so you also need to buy the following components to run the sponge filter:
Air pump
Airline tubing
Check valve (to prevent water from pouring out of the tank when the power is off)

Pore Size: 25ppi (different manufacturers rate porosity slightly different as it's an approximation)

Cleaning Instructions:

1. Use a fish bag, ziplock bag, or pitcher to put around the sponge while inside of the aquarium.
2. Lift the water and sponge out to catch the majority of debris that will come off while removing.
3. Remove the foam from the plastic basket. Use the aquarium water and squeeze out the debris from the sponge.
4. Discard the water and get more water from the aquarium.
5. Repeat Steps 3 and 4 until sponge filter is mostly free of debris.
6. Scrub the air collar as well to clear out any debris or algae that has covered the holes.
7. Reassemble the sponge filter, and install it back in the aquarium

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 28210456849

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Michael Yang
Bozeman, US
★★★★★ 5
My new favorite socks!
Color: White, Size: Medium
As someone that struggles with cold hands and feet, I started experimenting with using merino wool socks over my usual cotton and polyester blend socks. I am very pleased to report that these merino wool socks are very comfortable and warm. They have a secure and comfortable fit--ideal for casual everyday use. These socks perform well as athletic socks for winter soccer, and will slowly take over my sock drawer! These socks have a good thickness to them and feel durable for normal wear. The elastic portion of the sock stretches to accommodate wider ankles (like mine) and does not feel like it will lose elasticity quickly. Very fair value for the cost in my book.
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Reviewed in the United States on February 25, 2026
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Stephanie VandeWater
Massapequa, US
★★★★★ 5
Great product
Color: Black, Size: Medium
Super soft and fits like a sock should. I wash in a lingerie bag on gentle cycle and hang dry due to fabric type. My feet don't get sweaty which is why I have chosen merino wool products as all of my base layers (socks, underwear, etc)
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Reviewed in the United States on May 10, 2026
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M
San Leandro, US
★★★★★ 4
Lightweight and Comfortable, but very thin
Color: Black, Size: Large
I used the Lapulas Merino Wool Quarter Socks for Men on a Europe trip where I was walking pretty much all day, and overall they performed well. The biggest thing to know right away is that they are very thin. If you’re expecting thick, cushioned socks, these are not that. They feel more like a lightweight layer rather than something padded. That said, the thinness actually worked in my favor for travel. Even after long days of walking, my feet didn’t feel overly sweaty or damp. They seem to handle moisture pretty well, and I didn’t get that uncomfortable “wet sock” feeling, which is a big plus when you’re constantly on the move. They’re also surprisingly decent at regulating temperature. They’re not thick, but they still help keep your feet warm when it’s a bit cold, while staying breathable enough during the day. It’s more of a balanced, all-day comfort rather than heavy insulation. One thing I noticed is that they stretch out a bit after the first use. They’re snug at first, but after wearing them for a day, they loosen slightly. It’s not terrible, but it’s noticeable, especially since they’re already thin. Also, proper care really matters with these. Since they’re merino wool and lightweight, I’d recommend being careful with washing and drying—gentle wash and air drying is probably the best way to maintain the shape and quality. Throwing them in a regular hot wash/dry cycle will likely wear them out faster or affect the fit. Because they’re thin, they fit nicely inside shoes without feeling tight or bulky, which I appreciated when wearing sneakers for long periods. Pros: -Lightweight and comfortable for all-day walking -Good moisture control, feet don’t feel damp -Breathable and not too hot -Helps keep feet warm despite being thin -Easy to pack for travel Cons: -Very thin, not much cushioning -Slightly loosens after first use -Requires careful washing and drying
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Reviewed in the United States on May 15, 2026
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hstoner
Natrona Heights, US
★★★★★ 3
Too stretchy for my preference
Color: Black, Size: Large
The socks seem to be high quality, but they are too stretchy for my liking. They feel like "compression" socks, and become too thin and stretched when worn (yes I bought the correct size). Even though they have less Spandex than my preferred wool socks (e which are no longer available), they are much stretchier.
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Reviewed in the United States on April 9, 2026
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Amazon Customer
Waukegan, US
★★★★★ 5
Thick and comfortable
Color: Black, Size: Medium
These socks fit 7.5 wide size woman's shoe wearer perfectly. Socks are thick and comfy. They stay in place all day. I got rid of all my old socks and it is a pleasure not having to scrounge for a matching pair. They wash and dry well in machine on wool setting.
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Reviewed in the United States on May 17, 2026

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