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Pawfly 2 PCS Large Air Stones Cylinder, 4 x 2 Inch Aerator Bubble Diffuser for Ponds, Aquarium or Fish Tank

4.4 4.4 out of 5 stars 724 ratings

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4x2" (2 Pack)

Purchase options and add-ons

  • Medium Bubbles: With lots of micro holes on the air stones which allow abundant dense bubbles to spout from the cylinder. An ideal way to oxygenate your tank and enliven the aquatics.
  • Model: ASC100; Jetting volume: 5 L/min; Recommended air pump power: > 7 W; Standard ID airline tubing: 3/16". Great for aquariums, DWC systems or ponds.
  • Reliable Material: Made from durable and washable silicon carbide, it causes no effect to the health of your aquatics. Help keep fish or roots growing healthily.
  • Stable in Water: Each cylinder measures 2" D x 4" H and weighs 0.8 lbs. It can easily sink to the bottom and stand stably in your tank for steady bubbles.
  • Easy to Use: Soak the stone completely in water for 1 hour before use. Clean it regularly with a brush as it gets clogged after weeks or months of usage.

Customer ratings by feature

Value for money
4.1 4.1
Suction power
3.8 3.8

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Pawfly 2 PCS Large Air Stones Cylinder, 4 x 2 Inch Aerator Bubble Diffuser for Ponds, Aquarium or Fish Tank
Pawfly 2 PCS Large Air Stones Cylinder, 4 x 2 Inch Aerator Bubble Diffuser for Ponds, Aquarium or Fish Tank
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Price$9.88$29.98$14.99$19.99$9.99$8.75
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Customer Ratings
Value for money
4.1
4.1
3.8
4.5
4.1
Suction power
3.8
3.8
3.1
3.6
Sold By
Pawfly
Pawfly
Pawfly
Tenyon
CLL Pet Supplies
Amazon.com

From the brand


Product Description

132
132

LOGO

Pawfly specializes in all must-haves of aquarium accessories such as air pumps, air stones, sponge filters, fish nets, cleaning brushes and other accessories to set up your aquariums.

4 Inch Air Stone Cylinders

The 4 inch air stone cylinders feature durability, steady bubbles and high dissolved oxygen rate. Optimal for aerating your water reservoirs and livening up your aquatics. A necessity to have in the house of aquatic lovers.

Made from enduring and washable silicon carbide, they are well built to keep stable in water and produce constant bubbles for fish’s breath. Perfect for aeration in fish tanks, ponds, DWC reservoirs, aquariums, etc.

  • Abundant medium bubbles
  • Driven by pumps over 7 W
  • Fit for 3/16 inch ID hose
  • Stable and durable
  • Ideal for fish and plants
  • Soak for 1 hour before use
  • Packed with 2 Pcs in total
132

What Kind of Air Stone Should I Use?

A bigger air stone needs a more powerful pump to produce more bubbles.

Basically bigger air stones can produce more nice bubbles and they're used for powerful air pumps. If you connect a bigger air stone to a small pump, the bubbles will be produced only at the front of the stone. Small pumps go well with small air stones while powerful pumps and small stones don’t get along well.

About Shapes

The most common shape of this device is cylinder. However, you can also find it in globular, disc, or even cuboid shape. The cylindrical shapes can exist in many sizes and colors. Disc shapes can stay steady at the bottom of your tank, while globular ones can produce more bubbles in the case of the same size.

528

132

132

4 Inch Large Cylinder

The large cylindrical bubblers are well built for continuous use. You need an air pump more than 7 W to run the stones for constant bubbles.

Steady Medium Bubbles

With large jetting volume of 5 L/min, each bubbler produces enormous medium bubbles and always keeps still due to its stable construction.

Easy to Use

Soak the stone in water about 1 hour before use. Clean it regularly as it gets clogged and replace it when not working properly.

139 123 182 268
ASC100 ASC025 ASD040 ASR100 ASC050
Customer Reviews
4.4 out of 5 stars
724
4.6 out of 5 stars
4,442
4.5 out of 5 stars
1,323
4.3 out of 5 stars
1,188
4.5 out of 5 stars
3,045
Shape Cylinder Cylinder Disc Flat bottom Cylinder
Jetting Volume 5 L/min 0.8 L/min 2 L/min 15 L/min 1.2 L/min
Dimension 2" x 4" (D x H) 0.6" x 1" (D x H) 1.5" x 0.7" (D x H) 4" x 1.5" (D x H) 1" x 2" (D x H)
Pump Power Needed > 7 W > 2 W > 2 W > 4 W > 4 W
Soaking Time 1 Hour 1 Hour 1 Hour 3 Hours 1 Hour
Connector Diameter 3/16" 3/16" 3/16" 3/16" or 3/8" 3/16"
Application Pond, Circulation Fish bowl Fish bowl, Tank Circulation Fish tank

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Package Dimensions ‏ : ‎ 5.24 x 4.21 x 2.8 inches; 1.5 Pounds
  • Item model number ‏ : ‎ Naludo-NL132
  • Date First Available ‏ : ‎ March 12, 2017
  • Manufacturer ‏ : ‎ Pawfly
  • ASIN ‏ : ‎ B01MDV169A
  • Customer Reviews:
    4.4 4.4 out of 5 stars 724 ratings

Looking for specific info?

Customer reviews

4.4 out of 5 stars
4.4 out of 5
724 global ratings

Customers say

Customers like the performance, quality and size of the pet supplies. For example, they mention that it works great, is of high quality and is large. Some appreciate the weight. That said, opinions are mixed on bubbles and air distribution.

AI-generated from the text of customer reviews

41 customers mention31 positive10 negative

Customers like the performance of the pet supplies. For example, they say it works great in their small koi pond, and is well-priced. Some say that it works well for filtering water, and has no issues.

"Works perfect" Read more

"Works great. At first there were only large bubble around the inlet, but after a day or so I notice a ton of nice small bubbles all over." Read more

"Great product worked for my dwc!" Read more

"...I followed instructions and let it soak but it’s still not working. Not worth returning the faulty one. Won’t purchase again...." Read more

38 customers mention33 positive5 negative

Customers like the quality of the air stones. They say they are a great product, high quality, and rock solid. Some say that the stones are heavy and drop to the bottom right away.

"Does the job as advertised with minimal noise. Good value!" Read more

"...They keep everything airated. I’m happy for the price." Read more

"Durable, roots like it the added oxygen. Awesome deal" Read more

"Great air stones. Have bought few of these and have had no issues. Nice fine bubbles to aerate the water. Using for DWC buckets...." Read more

7 customers mention7 positive0 negative

Customers like the size of the pet supplies. They mention that it works great, and the air stones are quite big.

"...The air stones are quite big as well and for two of them...you can't beat the price." Read more

"I was looking for a heavy duty bubbler..This was alot bigger than expected which was great.. I originally purchased it to put at the bottom of my 35..." Read more

"I purchased these to aerate compost tea. They are a perfect size and have a great airflow." Read more

"BIGGG and awesome for my pond. Lots of bubbles. Great product if you need lots of air movement" Read more

5 customers mention5 positive0 negative

Customers like the weight of the air stones. For example, they say they're heavy enough to stay on the bottom and disperse air bubbles well. Some mention that the stones are great for hydroponics and stay put on the floor.

"These are awesome. Heavy enough to stay on bottom and great air distribution." Read more

"They work well, heavy and stay down." Read more

"They are nice and heavy and drop to the bottom right away but they only bubble at the top. Not throughout the whole unit...." Read more

"Heavier stones stay put on the bottom. A good dispersion of air bubbles." Read more

35 customers mention21 positive14 negative

Customers are mixed about the bubbles produced by the pet supplies. Some mention that the product creates lots of bubbles, while others say that the bubble only come from the end.

"Top notch bubbles exactly when you need them. Don’t you worry tiny fat baby, theses bubblers bubble the bubbles 🫧..." Read more

"Works great. At first there were only large bubble around the inlet, but after a day or so I notice a ton of nice small bubbles all over." Read more

"...I also have mine on it's side. Tons of bubbles!" Read more

"Tiny bubbles are ideal for aerating a pond and not only do these produce tiny bubbles but a good amount of them." Read more

9 customers mention5 positive4 negative

Customers are mixed about the air distribution of the pet supplies. Some mention that it has a great airflow, while others say that it doesn't work well. Some say that the stones diffuse the air evenly, while other say that very little air pushes through it and only around the top.

"...They keep everything airated. I’m happy for the price." Read more

"like so many others have found, air is expelled only at the junction of the fitting and the stone." Read more

"These are awesome. Heavy enough to stay on bottom and great air distribution." Read more

"all air escapes from the around the seal. no bubbles from the stone. Lame! left with only two choices and they both really suck for me...." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the connector. They mention that it arrived with broken plastic air tub connection points and was bent.

"The package arrived like it was thrown all over so the white air tube connector was bent and I could not straighten it fearing that i would break it..." Read more

"stones arrived damaged, chipped and scraped up plus one hose connector was broken." Read more

"Delivered damaged and unalbe to use. Bad packaging, broken plastic air tub connection points..." Read more

Decent quality
4 Stars
Decent quality
I opened the box and took these pictures. The packaging looked liked it had been through hell. There were chips of stone missing from the top but it did not affect the power of the stones. They keep everything airated. I’m happy for the price.
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Top reviews from the United States

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Top reviews from other countries

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Wily Lopez
1.0 out of 5 stars las conexiones son limitadas para el volumen de aire que esas piedas requieren
Reviewed in Mexico on July 23, 2021
Size: 4x2" (2 Pack)Verified Purchase
Akram
5.0 out of 5 stars Good product
Reviewed in Canada on March 19, 2023
Size: 4x2" (2 Pack)Verified Purchase
Daniela Thomas
5.0 out of 5 stars Used to keep rainwater fresh
Reviewed in Canada on July 4, 2022
Size: 4x2" (2 Pack)Verified Purchase
maria simith
1.0 out of 5 stars Defective
Reviewed in Canada on July 1, 2023
Size: 4x2" (2 Pack)Verified Purchase
Scott bendy
1.0 out of 5 stars One Star
Reviewed in Canada on June 2, 2017
Size: 4x2" (2 Pack)Verified Purchase