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Rubber Membrane Air Diffuser

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  • Strong,durable, long lasting EPDM rubber membrane tubular air diffuser
  • Perfect for pond aeration, circulation and destratification
  • Easier to clean and more clog resistant than air stones
  • Creates medium to large sized bubbles

$14.99 - $32.50

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The Rubber Membrane Tubular Air Diffuser is an ideal addition to a pond aeration system to oxygenate and circulate the water in your pond or water garden. The increase in dissolved oxygen improves water clarity and quality, and the circulation makes water temperatures in the entire pond more uniform. These improvements help koi fish and other aquatic life. To operate, this diffuser must be connected with tubing to a compressor (air pump).

Pump and tubing are not included. 

This EPDM rubber tubular air diffuser is available in different lengths. Each diffuser is 1.5 inches in diameter. Models with barbed inlets feature multiple sized barbs, which can be cut to fit a variety airline tubing. 

ModelConnector Type & SizeRecommended Air FlowMax Air Flow
RAD4 1/4" - 3/8" Barb 0.2 CFM / 5.7 LPM 1.1 CFM / 31.1 LPM
RAD6 1/4" - 3/8" Barb 0.4 CFM / 11.3 LPM 1.7 CFM / 48.1 LPM

RAD650W- (Self-weighted)

1/2" MPT 0.4 CFM / 11.3 LPM

1.7 CFM / 48.1 LPM

RAD8 3/8" - 1/2" Barb 0.7 CFM / 19.8 LPM 2.5 CFM / 70.8 LPM
RAD12 3/8" - 1/2" Barb 0.9 CFM / 25.5 LPM 3.5 CFM / 99 LPM
RAD1250 1/2" MPT 0.9 CFM / 25.5 LPM 3.5 CFM / 99 LPM

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