The body is washable – scrub off biofilm and soak in a dilute acid bath to shift calcium scale, then rinse thoroughly before returning it to service.

Rubber Bumper Diffuser

Q: How many diffusers do I need?

Divide your total air flow in LPM by the per-diffuser rate – 14 LPM for the C30D106C, 21 LPM for the C30D109C or 28 LPM for the C30D112C – and round up.

Q: What pressure is required to run it?

It is a low-pressure diffuser run from an air pump or blower, which needs to overcome the water depth above the diffuser plus the resistance of the rubber element.

Q: Does it suit pure oxygen or air service?

It is a medium-pore air diffuser for general aeration; pure oxygen dosing calls for a fine-pore ceramic diffuser, which makes far smaller bubbles.

Q: How does this compare with a ceramic diffuser?

Medium-pore rubber gives a coarser bubble for mixing and general aeration, while ceramic produces 100 to 400 micron bubbles for much higher gas transfer efficiency.

Q: Which barb size should I order?

Barb connections are available in 6 mm, 8 mm and 12 mm – match the barb to your existing airline.

Q: Where is it typically used?

Aquariums, ponds and other aquatic systems needing straightforward, reliable aeration.

A washable medium-pore rubber diffuser for straightforward aeration in aquariums, ponds and holding tanks.

Price range: $16.00 through $28.00 ex GST

Option

Clear

Categories: Aeration, Airstones / Diffusers

Applications: Pond, Public Aquarium, Reef Aquarium

Brand: Kamair

Product Information

Key Features

Medium-pore rubber diffuser for general aeration duty across aquariums, ponds and other aquatic systems
Durable, washable body that can be cleaned and returned to service rather than replaced
Barb connection options in 6 mm, 8 mm and 12 mm
Three lengths — C30D106C, C30D109C and C30D112C at 100, 200 and 300 mm, all 30 mm diameter
Air flow of 14 to 28 LPM per diffuser depending on length
Medium pore size gives a coarser bubble than a fine-pore ceramic diffuser, suiting general aeration and mixing rather than pure oxygen dosing
Sizing — divide your total air flow by the per-diffuser flow rate below (14, 21 or 28 LPM) to get the number of diffusers required.

Specifications

Model	SKU	Dimensions (L × Ø)	Air flow rate	Barb connection	Pore grade	Material
C30D106C	C30D106C	100 mm × 30 mm	14 LPM	6 mm / 12 mm	Medium pore	Rubber
C30D109C	C30D109C	200 mm × 30 mm	21 LPM	6 mm / 12 mm	Medium pore	Rubber
C30D112C	C30D112C	300 mm × 30 mm	28 LPM	6 mm / 12 mm	Medium pore	Rubber
8 mm barb option	—	—	—	8 mm — available on request	Medium pore	Rubber

Frequently Asked Questions

How many diffusers do I need?

What pressure is required to run it?

Does it suit pure oxygen or air service?

How does this compare with a ceramic diffuser?

How do I clean it?

Which barb size should I order?

Where is it typically used?

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Rubber Bumper Diffuser

Product Information

Key Features

Specifications

Frequently Asked Questions

Spare Parts & Consumables

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