Matala MDB12 – Twin 9″ Fine Bubble Membrane Diffuser Discs With Single Base

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Matala MDB12 – Twin 9″ Fine Bubble Membrane Diffuser Discs With Single Base

Fine Bubble Membrane Diffuser Discs are the ideal solution for getting air from your sub-surface aeration system into your pond or dam.

This product includes two 9″ fine bubble membrane diffuser discs and a base to connect them to.


Key Benefits:

  • Fine bubble diffusion is the most effective way to aerate with a sub-surface aeration system.
  • Super low maintenance solution for getting air into your dam.
  • Non-clogging design.
  • Intelligent operation – when air is running through the diffuser disc, the membrane opens, if the air is stopped, the membrane closes. This helps the diffuser resist tearing and stay cleaner for longer.
  • Super strong – these diffusers are a heavy duty, commercial grade solution meaning they’ll stand up to whatever you throw at them.
  • Low back pressure – efficient air flow with minimal back pressure on the air compressor.
  • Once weighted the diffuser will happily sit at the base or your pond or dam until you decide to pull it up.


What’s Included:

  • Heavy duty base.
  • Two 9″ Fine Bubble Membrane Diffuser Discs.
  • Required fittings for assembly.
  • Clamp for attaching your diffuser to air hose.


Installation Information:

These diffusers are to be used with a suitable compressor system.

This product includes a heavy-duty base which will need to be filled with gravel or similar to ensure that the diffuser stays at the base of the water body.

Once the base has been weighted, simply screw the diffuser discs to the base.

A clamp is included so that you can easily attach your diffuser to the air hose running from your compressor.

We suggest the use of weighted air hose to avoid having spaghetti looking noodles floating all around the surface of your water body.

Diffuser Installation Video: DAM HELPFUL TUTORIALS – How To Attach Air Hose To Your Diffuser – Connecting Your Dam Aeration


Useful Resources:

The LMP Guide To Airstones And Diffusers

Pond Aeration + Video: Why Is It Important To Have Oxygen In My Pond? And How Can I Get It?

Dam Aeration: Why Do I Need Aeration?

Fine Bubble VS Coarse Bubble Diffusion – Why Is Fine Bubble Diffusion Better Than Coarse Bubble Diffusion?

VIDEO: Dam Aeration – Surface vs Sub-Surface In Less Than Two Minutes

Which Is Better – Surface Or Sub-Surface Aeration?

How to keep your Sub-Surface aerator clean and running well.

Solution Showcase: Sub-Surface Lake Aeration

Want the Rolls Royce system? Check out this project video on Vertex Sub-Surface Aeration.


Complimentary Products:

Please note that these diffusers need to be paired with the appropriate air compressor for your situation. If you are unsure which compressor you require, please fill out a contact form or give us a call on 1300 005 670 for assistance.

Depending on the diameter and length you require, we suggest selecting your air hose from the below options:

You can view the product brochure for Matala Self-Weighted Air Hose here.

If you’re hunting extra protection for your compressor or air pump, we suggest connecting a check valve to your diffuser prior to attaching hose. Check valves are marked to show which direction air is able to flow through them, please install your check valve with the arrows pointing towards the diffuser.


The Fine Bubble Membrane Diffuser Disc and included base are commercial grade products. This means that in addition to ponds, dams and other residential water bodies, they are also suitable for application in:

  • Aquaculture
  • Lagoons
  • Wastewater Systems
  • Food Processing Plants
  • And More.


To receive advice for larger and/or commercial water bodies, please contact our sister company, Water Quality Solutions.

Weight 2.21 kg
Dimensions 31 × 20 × 28 cm
Air Output

40-120 lpm
1.4-4.2 cfm


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