Airstones: Low resistance ceramic Air Diffusers. Provides more output due to less back pressure. Allows Air pump to operate at higher flows. Can be cleaned and re-used for many years. Fused ceramic airstones last far longer with less back pressure than conventional hobbyist grade “bonded” airstones. The #AS.4 is compact enough to fit inside Hydro-Sponge filters with minimal water flow restriction due its small size. For higher air/water flow in the largest Hydro V use the #AS.6L

Round Ball type or ASL series are an excellent choice for large Aquariums, Ponds or larger holding vats. Their extremely large diameter provides the lowest resistence with increased outputs. Combine with any of our LPH series Air Pumps for superior  aeration in high density conditions. Extended square bumpers on ASL diffusers protect them from damage.

For ease of maintenance use the rubber membrane type diffusers. These will not clog due to the flexible rubber membranes which continuously self cleans its pores.

Item #

Image

Description

Price

Cylindrical Ceramic Air Diffusers

AS.4L

3/8” diameter x 7/8” long
standard airline connector

$0.60

AS.6A

5/8” diameter x 7/8” long
standard airline connector

$0.79

AS.6LAC

5/8” diameter x 1 1/4” long
standard airline connector

$0.95

AS.6L

5/8” diameter x 1 3/8” long
standard airline connector

$0.89

AS.6XLA

5/8” dia x 2 3/4” long
standard airline connector
(w/ plastic molded bumpers)

$1.69

AS.7

3/4” diameter x 1 1/2” long
standard airline connector

$1.05

AS.7L

3/4” diameter x 2” long
standard airline connector
~ 14 LPM
high capacity stone

$1.20

AS.9

7/8” dia x 4 3/4” long
standard airline connector
(w/ plastic molded bumpers)
max 10 LPM

$4.20

AS110X4

1 1/8” diameter x 4” long
1/4” & 1/2” stepped barb + add-on 3/16” barb
~ 9 LPM max flow

$4.95

AS1.2A1

1 1/4 ” diameter x 3” long
x 3/16”& 3/8” connector
 (w/ molded plastic Bumpers)
~ 10 LPM max flow

SALE
$2.95
reg $4.00

AS1.2B

1 1/4 ” diameter x 4 1/4” long
x 3/16”& 3/8” connector
 (w/ molded plastic Bumpers)
~ 15 LPM max flow

$4.70

AS1.2C

1 1/4 ” diameter x 5 1/4” long
3/16”&3/8” connector
(w/ molded plastic bumpers)
~ 18 LPM max flow

$5.40

AS110X6

1 1/8” diamter x 6” long
1/4” & 1/2” stepped barb + add-on 3/16” barb
w/ round rubber  bumpers
~ 14 LPM max flow

$7.95

AS110X10

1 1/8” diameter x 10” long
1/4” & 1/2” stepped barb + add-on 3/16” barb
w/ round rubber bumpers
~ 22 LPM max flow

$12.25

AS112X7

1 1/2” dia x 7” long 
3/8 inlet barb
barb size can be changed:
airline, 3/16”, 1/4” 1/2”
~ 30-70 LPM max flow*
(dependent on tubing size)

$19.75

AS112X9

1 1/2” dia x 9” long 
3/8 inlet barb
barb size can be changed:
airline, 3/16”, 1/4” 1/2”
~ 30-100 LPM max flow*
(dependent on tubing size)

$22.00

AS200X9HA

~ 2”OD x 13.5” OAL with multi ends
Extra Large Black Ceramic Diffuser
airstone surface area: 1 5/8” dia x 9”
use with 1/2” or 1” ID flex tubing or PVC fittings. Both hex cap ends removable for connection to 1 1/2” PVC slip fittings
can handle up to ~100 LPM

$34.00

AS200X6

2”OD x 6” long
X-Large dia. Ceramic Diffuser
barb connection: 3/8”
can handle up to ~50 LPM

$19.00

AS200X12-014N

2”OD x 12” long
Extra Large Ceramic Diffuser
1/4” FNPT inlet port, specify barb size for tubing connection: 1/4”, 5/16”, 3/8” or 1/2”
can handle up to ~120 LPM

$29.95

Dual Ceramic Airstone Assemblies
This setup is usefull with moving bed media sumps. Place in full width of sump to actuate entire bed of media. Requires appropriately sized air source. Contact us with application help.

AS112X7-2I

1 1/2” dia x ~18” long 
3/8 inlet barb
barb size can be changed:
airline, 3/16”, 1/4” 1/2”
~ 30-100 LPM max flow*
(dependent on tubing size)

CALL

AS112X9-2I

1 1/2” dia x ~20” long 
3/8 inlet barb
barb size can be changed:
airline, 3/16”, 1/4” 1/2”
~ 30-100 LPM max flow*
(dependent on tubing size)

CALL

Large Ceramic Diffuser Spoke Assemblies
High Volume Ceramic Airstones in a Cross configuration
Center inlet barb fits 3/8” ID tubing or any 1/4 NPT thd fitting
Used in Ponds, Aquaculture, Aquaponics, Hydroponics, Holding Vats.
Molded plastic bumbers keep airstones away from liner or pond bottom.

AS112X7-4X

16 1/2” diameter cross pattern
(4)  1 1/2” dia x 7” long 
3/8 inlet barb
(barb can be changed, specify size)
~ 60 LPM rec’d flow

$74.95

AS112X9-4X

20 1/2” diameter cross pattern
(4)  1 1/2” dia x 9” long 
3/8 inlet barb
(barb can be changed, specify size)
 ~ 70 LPM rec’d flow

$79.95

Round Ball-type Ceramic Diffusers

ASB075

3/4” diameter ball style
standard airline connection

$0.79

ASB100

1” diameter ball style
standard airline connector

$0.95

ASB125

1 1/4” diameter ball style
standard airline connector

$1.30

ASB150

1 1/2” diameter
standard airline connector

$2.35

ASB200

2” diameter
stepped barb connector
standard airline connector
& 5/16”

$3.27

Disc Style Ceramic Diffusers
Flat Disc provides even bubble dispersion within water column
popular with Hydroponics/Aquaponics installations

ASD2

2” dia x 1/2” thick
inlet barb: airline
Molded plastic base encases ceramic disc
rec’d max flow rate: 8 LPM

$4.50

ASD2NB

~2.3” dia x 5/8” thick
stepped inlet barb: airline & 3/8”
no bumper - solid all ceramic

$6.00

ASD3NB

~3.2” dia x 5/8” thick
stepped inlet barb: airline & 3/8”
no bumper - solid all ceramic

$7.50

ASD4

~4” dia x 3/4” thick
stepped inlet barb: airline & 3/8”
Molded plastic base encases ceramic disc
rec’d max flow rate: 10 LPM

$5.95

ASD4P

~4” dia x 3/4” thick
Ported for high flow: 3/8 inlet”
Molded plastic base encases ceramic disc
rec’d max flow rate: 30 LPM

$10.50

ASD4NB

~4” dia x 5/8” thick
stepped inlet barb: airline & 3/8”
no bumper - solid all ceramic

$8.75

ASD5

~5” dia x 3/4” thick
stepped inlet barb: airline & 3/8”
Molded plastic base encases ceramic disc
rec’d max flow rate: 13 LPM

$7.95

ASD5P

~5” dia x 3/4” thick
ported for high flow: 3/8” barb
Molded plastic base encases ceramic disc
rec’d max flow rate: 30+ LPM 

$14.95

ASD8

~ 8” dia x 1.2” thick
1/8 NPT threaded inlet
fitted with brass 9mm barb
Molded plastic base encases ceramic disc
high flow: 50 LPM or more

$27.95

Ceramic Bar Diffusers

AS8BAR

8” long x 5/8” w x 5/8” h
Flat Bar Diffuser
stepped airline barb & 3/8” barb
rec’d max flow rate: 8 LPM

$5.50

Bubble Wand Style Rubber or Plastic Diffusers

ADBWB1

Flexible rubber membrane diffuser - Bubble wall, 15” long
weighted to stay submersed

$1.21

ADBWB2

same as above

Flexible rubber membrane diffuser - Bubble wall, 24” long
weighted to stay submersed

$6.50

ADBWB3

same as above

Flexible rubber membrane diffuser - Bubble wall, 35” long
weighted to stay submersed

$7.95

ADBWB4

same as above

Flexible rubber membrane diffuser - Bubble wall, 48” long
weighted to stay submersed

$8.75

ADBWB5

same as above

Flexible rubber membrane diffuser - Bubble wall, 60” long
weighted to stay submersed

$11.25

POROUS RUBBER DIFFUSER TUBING

ADPRH012X1

porous Rubber tubing
1/2” ID x 1” OD
connect to air supply using standard barb fitting must be weighted to remain submersed

$2.50/ft

Large Non-Clogging Rubber Membrane Diffusers
Membrane diffusers require ~0.5 PSI or greater air pressure to operate which should be considered when sizing air source. Benefits of membrane style is self-cleaning action of rubber membrane. As air is forced through rubber expands and releases any obstruction that may have formed such as algae or calcium/mineral deposit fouling.

ADRS4

1 1/4” diameter x 4” long,
w/ 3/16, 1/4” and 1/2 tubing connectors
~ 15 LPM max flow

$10.44

ADRS4X2

1 1/4” diameter x 11.5” long
w/ 3/8” tubing connector
~ 30 LPM max flow
suitable for small sumps with moving bed media

$30.00

ADRE070X20

3/4” diameter x 10” long
w/ 3/8” tubing connector
max flow 9 LPM
suitable for small sumps with moving bed media

$19.64

ADRE070X20

3/4” diameter x 20” long
w/ 3/8” tubing connector
max flow 15 LPM
suitable for sumps with moving bed media

$26.21

ADRE118X10

1 1/8” diameter x 10” long,
w/ 3/8” tubing connector
max flow 25 LPM

$19.64

ADRE118X20

1 1/8” diameter x 20” long,
w/ 3/8” tubing connector
max flow 50 LPM

$24.73

ADRL300

2 1/4” diameter x 12” long
w/ 3/4” FNPT threaded connection
~ 1 CFM - 4 CFM max flow

$29.00

ADRL600

2 1/4” diameter x 24” long
w/ 3/4” FNPT threaded connection
~ 2 CFM - 5.5 CFM max flow

$39.00

ADRD1

Dome type rubber membrane diffuser
9” diameter x 3/4 MNPT pipe thread connection
~ 1 CFM - 4 CFM max flow

$19.00

ADRD2

Dome type rubber membrane diffuser
12” diameter x 3/4 MNPT pipe thread connection
~ 1 CFM - 6 CFM max flow

$22.00

ADRWB

Dome type rubber membrane diffuser
w/ round weighted base
9” diameter x hose barb connection
(specify 1/2”, 5/8” or 3/4”)

$32.95

ADR1WBP

Dome type rubber membrane diffuser
w/ rectangular weighted base
9” diameter x hose barb connection
(specify 1/2”, 5/8” or 3/4”)

$42.50

ADR1BD3

Dome type rubber membrane diffuser
 w/ integrated 3” Bottom Drain
9” diameter x hose barb connection
(specify 1/2”, 5/8” or 3/4”)

$49.95

PHRW3/8

Weighted tubing, 3/8” ID
for connecting diffuser to air pump.
Weighted tubing remains submerged on bottom of pond while delivering air to diffusers. Connect to hose barb fittings use plastic or SS hose clamps

CLICK

PHRW5/8

Weighted tubing, 5/8” ID
for connecting diffuser to air pump.
Weighted tubing remains submerged on bottom of pond while delivering air to diffusers. Connect to hose barb fittings use plastic or SS hose clamps

CLICK

PHRW3/4

Weighted Tubing, 3/4” ID
for connecting diffuser to air pump.
Weighted tubing remains submerged on bottom of pond while delivering air to diffusers. Connect to hose barb fittings use plastic or SS hose clamps

CLICK

Item

Description

Price

RGES-1/8

Exhaust Silencer / Air Diffuser, 1/8” NPT

CLICK

RGES-1/4

Exhaust Silencer / Air Diffuser, 1/4” NPT

CLICK

RGES-3/8

Exhaust Silencer / Air Diffuser, 3/8” NPT

CLICK

RGES-1/2

Exhaust Silencer / Air Diffuser, 1/2” NPT

CLICK

RGES-3/4

Exhaust Silencer / Air Diffuser, 3/4” NPT

CLICK