Quantcast
We wish everyone a very Happy Thanksgiving! We will be closed from Nov 17th through Nov 27th to spend time with our families. Please continue to place orders and we will fill them starting when we return on Nov 28th - All emails and phone calls should be returned between Nov 28th and Nov 29th.

Customer Service 1.866.426.7663 Monday - Friday 10AM - 4PM EST    shipping info | privacy policy | help
Pond & Waterfall Pumps, Water Gardening Supplies and so much more!
Product Categories

Ponding 101
Did You Know?
more info >
A biological pond filter is beneficial for every pond, with or without fish. View our pond filters today!

Air Stones and Membrane Diffusers

Rubber Membrane Diffuser - 4" Long - 1/4" - 3/8" - RAD4

Rubber Membrane Diffuser - 4" Long - 1/4" - 3/8" - RAD4

Suggested Retail: $11.79Our Price: Only $10.03
You save: 15%

Qty:

Rubber Membrane Diffuser - 6" Long - 1/4" - 3/8" - RAD6

Rubber Membrane Diffuser - 6" Long - 1/4" - 3/8" - RAD6

Suggested Retail: $15.49Our Price: Only $13.17
You save: 15%

Qty:

Rubber Membrane Diffuser - 8" Long - 3/8" - 1/2" - RAD8

Rubber Membrane Diffuser - 8" Long - 3/8" - 1/2" - RAD8

Suggested Retail: $17.49Our Price: Only $14.86
You save: 15%

Qty:

Rubber Membrane Diffuser - 12" Long - 3/8"-1/2" - RAD12

Rubber Membrane Diffuser - 12" Long - 3/8"-1/2" - RAD12

Suggested Retail: $25.69Our Price: Only $21.83
You save: 15%

Qty:

Rubber Membrane Diffuser - 6" Long - 1/2" MPT - RAD650

Rubber Membrane Diffuser - 6" Long - 1/2" MPT - RAD650

Suggested Retail: $15.49Our Price: Only $13.17
You save: 15%

Qty:

Rubber Membrane Diffuser - 8" Long - 1/2" MPT  - RAD850

Rubber Membrane Diffuser - 8" Long - 1/2" MPT - RAD850

Suggested Retail: $17.49Our Price: Only $14.86
You save: 15%

Qty:

Rubber Membrane Diffuser - 12" Long - 1/2" MPT - RAD1250

Rubber Membrane Diffuser - 12" Long - 1/2" MPT - RAD1250

Suggested Retail: $25.69Our Price: Only $21.83
You save: 15%

Qty:

Rubber Membrane Diffuser - 24" - 3/4" MPT - RAD2475

Rubber Membrane Diffuser - 24" - 3/4" MPT - RAD2475

Suggested Retail: $52.89Our Price: Only $44.96
You save: 15%

Qty:

Pro-Glass Alumina Airstone - 1-1/2" Long - 1/4" Barb - AS15

Pro-Glass Alumina Airstone - 1-1/2" Long - 1/4" Barb - AS15

Suggested Retail: $9.39Our Price: Only $7.51
You save: 20%

Qty:

Pro-Glass Alumina Airstone - 3" Long - 3/8" Barb -  AS337

Pro-Glass Alumina Airstone - 3" Long - 3/8" Barb - AS337

Suggested Retail: $14.69Our Price: Only $11.75
You save: 20%

Qty:

Pro-Glass Alumina Airstone - 6" Long - 3/8" barb - AS637

Pro-Glass Alumina Airstone - 6" Long - 3/8" barb - AS637

Suggested Retail: $18.89Our Price: Only $15.11
You save: 20%

Qty:

Pro-Glass Alumina Airstone - 9" Long - 3/8" barb - AS937

Pro-Glass Alumina Airstone - 9" Long - 3/8" barb - AS937

Suggested Retail: $32.69Our Price: Only $26.15
You save: 20%

Qty:

Pro-Glass Alumina Airstone - 12" Long - 3/8" barb - AS1237

Pro-Glass Alumina Airstone - 12" Long - 3/8" barb - AS1237

Suggested Retail: $37.09Our Price: Only $29.67
You save: 20%

Qty:

Pro-Glass Alumina Airstone - 6" Long - 1/2" MPT - AS650

Pro-Glass Alumina Airstone - 6" Long - 1/2" MPT - AS650

Suggested Retail: $19.19Our Price: Only $15.35
You save: 20%

Qty:

Pro-Glass Alumina Airstone - 9" Long - 1/2" MPT - AS950

Pro-Glass Alumina Airstone - 9" Long - 1/2" MPT - AS950

Suggested Retail: $31.69Our Price: Only $25.35
You save: 20%

Qty:

Pro-Glass Alumina Airstone - 12" Long - 1/2" MPT - AS1250

Pro-Glass Alumina Airstone - 12" Long - 1/2" MPT - AS1250

Suggested Retail: $35.99Our Price: Only $28.79
You save: 20%

Qty:

Single Membrane Diffuser - 10.5" Diameter - MD3

Single Membrane Diffuser - 10.5" Diameter - MD3

Suggested Retail: $44.19Our Price: Only $39.77
You save: 10%

Qty:

Membrane Diffuser Assemblies - Single Diffuser - EPMD1

Membrane Diffuser Assemblies - Single Diffuser - EPMD1

Suggested Retail: $116.99Our Price: Only $105.29
You save: 10%

Qty:

Membrane Diffuser Assemblies - Double Diffuser - EPMD2

Membrane Diffuser Assemblies - Double Diffuser - EPMD2

Suggested Retail: $159.99Our Price: Only $143.99
You save: 10%

Qty:

Membrane Diffuser Assemblies - Quad Diffuser - EPMD4

Membrane Diffuser Assemblies - Quad Diffuser - EPMD4

Suggested Retail: $249.79Our Price: Only $224.81
You save: 10%

Qty:

Rubber Membrane Diffuser - 6" Long - 1/2" MPT - RAD650

Rubber Membrane Diffuser - 6" Long - 1/2" MPT - RAD650

Suggested Retail: $15.49Our Price: Only $13.17
You save: 15%

Qty:

Rubber Membrane Diffuser - 8" Long - 1/2" MPT  - RAD850

Rubber Membrane Diffuser - 8" Long - 1/2" MPT - RAD850

Suggested Retail: $17.49Our Price: Only $14.86
You save: 15%

Qty:

Rubber Membrane Diffuser - 12" Long - 3/8"-1/2" - RAD12

Rubber Membrane Diffuser - 12" Long - 3/8"-1/2" - RAD12

Suggested Retail: $25.69Our Price: Only $21.83
You save: 15%

Qty:

Rubber Membrane Diffuser - 12" Long - 1/2" MPT - RAD1250

Rubber Membrane Diffuser - 12" Long - 1/2" MPT - RAD1250

Suggested Retail: $25.69Our Price: Only $21.83
You save: 15%

Qty:

1/2 inch Barbed Inlet Air Check Valve - 3/4 inch MPT

1/2 inch Barbed Inlet Air Check Valve - 3/4 inch MPT

Suggested Retail: $15.95Our Price: Only $11.95
You save: 25%

Qty:

5/8 inch Barbed Inlet Air Check Valve - 3/4 inch MPT

5/8 inch Barbed Inlet Air Check Valve - 3/4 inch MPT

Suggested Retail: $15.95Our Price: Only $11.95
You save: 25%

Qty:

Air Diffuser Manifold Assembly - 2 Diffusers - DM2

Air Diffuser Manifold Assembly - 2 Diffusers - DM2

Suggested Retail: $79.89Our Price: Only $71.90
You save: 10%

Qty:

Air Diffuser Manifold Assembly - 4 Diffusers - DM4

Air Diffuser Manifold Assembly - 4 Diffusers - DM4

Suggested Retail: $128.59Our Price: Only $115.73
You save: 10%

Qty:

Air Diffuser Manifold Assembly - 6 Diffusers - DM6

Air Diffuser Manifold Assembly - 6 Diffusers - DM6

Suggested Retail: $164.59Our Price: Only $148.13
You save: 10%

Qty:

Air Diffuser Manifold Assembly - 2 x Alumina Airstone Diffusers - DM2-S

Air Diffuser Manifold Assembly - 2 x Alumina Airstone Diffusers - DM2-S

Suggested Retail: $89.99Our Price: Only $80.99
You save: 10%

Qty:

Air Diffuser Manifold Assembly - 4 x Alumina Airstone Diffusers - DM4-S

Air Diffuser Manifold Assembly - 4 x Alumina Airstone Diffusers - DM4-S

Suggested Retail: $149.89Our Price: Only $134.90
You save: 10%

Qty:

Air Diffuser Manifold Assembly - 6 x Alumina Airstone Diffusers - DM6-S

Air Diffuser Manifold Assembly - 6 x Alumina Airstone Diffusers - DM6-S

Suggested Retail: $195.09Our Price: Only $175.58
You save: 10%

Qty:

Pondmaster - 6" Straight Fine Bubble Air Diffuser  - 14570

Pondmaster - 6" Straight Fine Bubble Air Diffuser - 14570

Suggested Retail: $15.75Our Price: Only $13.23
You save: 16%

Qty:

Pondmaster - Small Air Diffuser Kit - 14575

Pondmaster - Small Air Diffuser Kit - 14575

Suggested Retail: $31.29Our Price: Only $26.28
You save: 16%

Qty:

Pondmaster - Round 7-in Air Diffuser - 14580

Pondmaster - Round 7-in Air Diffuser - 14580

Suggested Retail: $33.08Our Price: Only $27.78
You save: 16%

Qty:




Exclusive Offers & Savings
Join our mailing list & SAVE!


WHY BUY FROM US
Courteous, knowledgeable and professional sales personnel
Brand new and factory fresh merchandise
Thousands of satisfied customers
Huge stock levels - 99.8% In stock
Quality name brand products
Competitive pricing
Free Eco-Saver Shipping on orders $99+
Price Match Guarantee
128-Bit SSL Encryption
secure