Updated: 26 Feb 2025

40mm air bubble stone aerators

Explore up to 44% Off

Updated: 26 Feb 2025

#1

Best Choice
Pawfly Aquarium 8 Inch Large Air Stone Disc Bubble Diffuser Release Tool for Air Pumps Fish Tanks Buckets Ponds DWC Reservoirs and Circulation System

9.9

Pawfly

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Main highlights

Reliable Material: Made of mineral material and sintered at a high temperature. Great for aeration in a DWC reservoir. Help keep fish or roots growing healthily.

Model: ASD-200; Jetting volume: 28 L/min; Recommended air pump power: > 15 W; Inner diameter of tubing: 3/8". NOT suitable for standard 3/16" airline tubing.

Medium Bubbles: The air stone produces abundant dense bubbles to aerate your water reservoirs. A great way to increase oxygen solubility in fish tanks, aquariums or ponds.
#2

Value for Money
AquaMiracle New Innovative Rubber Air Stone for Large Aquarium, 8”x1.52” Fish Tank Air Stone 1-Pack, Air Bubbler Oxygen Air Diffuser for Pond Aerator

9.8

AquaMiracle

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Main highlights

STAYS STEADILY AT THE BOTTOM – This air diffuser is self-weighted. The square design at both ends allows this fish tank air stone to stay steadily at the bottom of your reservoir. While traditional cylinder air stone or round air stone will be moved around easily by either water flow or fish.

INNOVATIVE BUBBLING TECHNOLOGY, HIGHER DISSOVLED OXYGEN LEVEL – Different from the traditional sand air stones, this cylinder aquarium air stone is innovatively made of rubber material. Processed with advanced technology, the surface of the rubber cylinder is with thousands of tiny pores to distribute air into water. Thus the oxygen can be dissolved efficiently into water.

FINER AND RICHER BUBBLES – Comparing with the traditional sand air stones, this air bubbler diffuses finer and richer bubbles, which will be more appreciated by your applications. REMINDER – if the bubbles are less than expected, use an air pump with higher flow rate and pressure.
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#3
uxcell Aquarium Fish Tank Ponds Ceramic Air Stone Diffusers 40mm x 15mm

9.7

uxcell

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Main highlights

Total Size: 40mm x 15mm; Material: Mineral

Net Weight: 31g

Color: Gray; Package Content: 1 x Aquarium Air Stone
#4
REDGO Slient 2 Air Bubble Disk Stone Aerator Aquarium Fish Tank Pond Pump Hydroponic Oxygen with 2M Silicone Tube

9.6

REDGO

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Main highlights

【Multifunction】 Multi-level muffler/ Small size but plus oxygen/ Low noise/ Oil-free compressed air pure/ Can effectively regulate the air displacement.

【Long life & Low-frequency Operation】 Fish Tank Oxygen Air Pump Hydroponics + 2 Air stone + 1M Silicone Tube

Double-headed Pump】 There are two vents , can provide oxygen to two fish tanks at the same time.
#5
AQUANEAT Aquarium Air Stone Disc 4 inch, Aerator Bubble Diffuser, Air Pump Accessories Airstones for Aquariums, Fish Tanks,Hydroponics,and Ponds

9.3

AQUANEAT

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Main highlights

Widely applicable: Suitable for hydroponic systems, circulation systems, aquarium fish tanks, helping extend the life of your nutrient solution, keep fish/ roots healthy and promote plant growth

Material: Durable and sturdy material, safe to your fish

Dimension: 4.1" D x 0.8" H; Fits standard airline tubing aquarium and CO2 tubing with inner diameter of 3/16"; Recommend air pump power > 4 W
#6
AQUANEAT Air Stones for Ponds 2 Inch, Long Lasting Aerator Oxygen Diffuser, Air Pump Accessories for Aquariums, Fish Tanks, Hydroponics and DWC Reservoirs 4 Pack

9.0

AQUANEAT

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Main highlights

Widely applicable: Suitable for hydroponic systems, aquarium fish tanks, preventing ponds freezing in winter, helping extend the life of your nutrient solution, keep fish/ roots healthy and promote plant growth

Fine bubble: Compared with ordinary bubble stone, creating more fine bubbles, makes the dissolved oxygen amount larger

Air Stone Dimension: 2 "D; Connector Diameter: 3/16"/ or 3/8"; Recommended air pump power: > 4 W
#7
Mudder 4 Pieces Round Air Stone Disc Hydroponics Pump Bubble Diffuser Release Tool for Aquarium with 12 Pieces Suction Cups Fish Tank Aerator Air Stone Kit

8.9

Mudder

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Main highlights

Specification: the jetting volume of bubble diffuser is 12 L/ min, suitable for approx 24 - 59 inch fish tank, fits for tube of 3/ 16 inch and 3/ 8 inch inner diameter; Recommended air pump power ranges from 4W to 8W (works best with 8W air pump), standard pressure is 0.01 MPa, max pressure is 0.012 MPa

Quality and safe materials: made of quality and non-toxic mineral material with high temperature sintering process, these air stone bubblers are sturdy and durable; They can produce fine bubbles for oxygen replacement and lower CO2 levels, safe for fishes to live in

Package includes: 4 pieces of air stone discs and 12 pieces of suction cups, which can hold the air stone in place and prevent it from friction abrasion to increase its lifespan
#8
Pawfly Aquarium 15-40 GPH Compact Air Pump Quiet Oxygen Aerator Pump with Air Stone/Nano Bio Sponge Filter Airline Tubing and Check Valve Accessories for 3-20 Gallon Buckets and Fish Tanks

8.8

Pawfly

-44%

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Why we love it

Compact and space-saving.

Quiet operation.

Ideal for small tanks.

Main highlights

Compact and Powerful Design
Compact size with 40 GPH output, perfect for space-saving setups.

Ideal for Small Aquariums
Best suited for 5-20 gallon fresh and marine tanks.

Quiet Operation Praised by Users
Operates at less than 45 dB, reducing noise effectively.

-44%
#9
Air Stone Cylinder Bubble Diffuser Airstones for Aquarium 0.9inch Diffuser Release Tool for Nano Air Pumps Small Buckets and Fish Tanks 5 Pcs (5P)

8.7

Brosay

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Main highlights

Size→Air stones aquariums 2.5cm/0.98inches, universal internal 4mm air pipe.

Material→High-temperature sintered bubble stone made of high-temperature sintering, different from the general market bubble stone. Material is strong and durable, can be repeatedly cleaned, long-term use.

Easy to hide design→Small size, easy to hide in aquarium. It can also create misting effect to beautify your aquarium or fish tank.
#10
Pawfly Aquarium 4 Inch Air Stone Disc Bubble Diffuser Release Tool for Air Pumps Buckets Fish Tanks Ponds DWC Reservoirs and Circulation System - 2 Pack

8.4

Pawfly

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Why we love it

Produces abundant bubbles to oxygenate aquariums effectively.

Made from safe, high-quality mineral material.

Stable design with strong suction cups for secure placement.

Main highlights

Produces Abundant Dense Bubbles
Medium Bubbles: Produces abundant dense bubbles to aerate your water reservoirs, increasing oxygen solubility and enlivening aquatic life.

Ideal for Aquariums and Hydroponics
Great for aquariums, DWC systems, or ponds. Recommended air pump power: 4 W. Jetting volume: 12 L/min. Inner diameter of tubing: 3/16 or 3/8.

Customers Praise Bubble Production
Many customers appreciate the significant improvement in air diffusion and bubble production, which enhances the health of aquatic environments and hydroponic systems.

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40mm air bubble stone aerators

Pawfly Aquarium 8 Inch Large Air Stone Disc Bubble Diffuser Release Tool for Air Pumps Fish Tanks Buckets Ponds DWC Reservoirs and Circulation System

9.9

Main highlights

AquaMiracle New Innovative Rubber Air Stone for Large Aquarium, 8”x1.52” Fish Tank Air Stone 1-Pack, Air Bubbler Oxygen Air Diffuser for Pond Aerator

9.8

Main highlights

uxcell Aquarium Fish Tank Ponds Ceramic Air Stone Diffusers 40mm x 15mm

9.7

Main highlights

REDGO Slient 2 Air Bubble Disk Stone Aerator Aquarium Fish Tank Pond Pump Hydroponic Oxygen with 2M Silicone Tube

9.6

Main highlights

AQUANEAT Aquarium Air Stone Disc 4 inch, Aerator Bubble Diffuser, Air Pump Accessories Airstones for Aquariums, Fish Tanks,Hydroponics,and Ponds

9.3

Main highlights

AQUANEAT Air Stones for Ponds 2 Inch, Long Lasting Aerator Oxygen Diffuser, Air Pump Accessories for Aquariums, Fish Tanks, Hydroponics and DWC Reservoirs 4 Pack

9.0

Main highlights

Mudder 4 Pieces Round Air Stone Disc Hydroponics Pump Bubble Diffuser Release Tool for Aquarium with 12 Pieces Suction Cups Fish Tank Aerator Air Stone Kit

8.9

Main highlights

Pawfly Aquarium 15-40 GPH Compact Air Pump Quiet Oxygen Aerator Pump with Air Stone/Nano Bio Sponge Filter Airline Tubing and Check Valve Accessories for 3-20 Gallon Buckets and Fish Tanks

8.8

Why we love it

Main highlights

Air Stone Cylinder Bubble Diffuser Airstones for Aquarium 0.9inch Diffuser Release Tool for Nano Air Pumps Small Buckets and Fish Tanks 5 Pcs (5P)

8.7

Main highlights

Pawfly Aquarium 4 Inch Air Stone Disc Bubble Diffuser Release Tool for Air Pumps Buckets Fish Tanks Ponds DWC Reservoirs and Circulation System - 2 Pack

8.4

Why we love it

Main highlights

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