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Sweetwater Oxygen Diffusers

Fine-pore bonded silica diffusers built for pure oxygen rather than plain aeration. They share the glass-bonded silica construction of the Sweetwater air range but use a smaller pore size for finer, more uniform bubbles and more efficient oxygen transfer. Three models cover 9 to 28 LPM on a 1/4″ (6 mm) hose barb, suiting RAS, hatchery and live holding systems that need precise oxygen control.

Price range: $25.00 through $60.00 ex GST

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Sweetwater Oxygen Diffusers
Sweetwater Oxygen Diffusers - Image 2

Product Information

Key Features

  • Same glass-bonded silica construction as Sweetwater air diffusers, with a smaller pore size
  • Finer, more uniform bubbles for highly efficient oxygen dissolution
  • Three models — AS80, AS150 and AS300 — covering 9 to 28 LPM
  • All models fit a 1/4″ (6 mm) hose barb
  • Built for pure oxygen gas service rather than general aeration
  • Needs roughly 5 inches H2O more pressure than a standard Sweetwater air diffuser
  • Fine pores need more frequent cleaning than standard diffusers — plan the maintenance in
  • Sizing — divide the total oxygen flow your system needs by the per-diffuser flow rate in the table below to get the number of diffusers.

Specifications

ModelGas flowSize (length × Ø)Gas connection
AS809 LPM8 cm × 4 cm1/4″ (6 mm) hose barb
AS15014 LPM15 cm × 4 cm1/4″ (6 mm) hose barb
AS30028 LPM30 cm × 4 cm1/4″ (6 mm) hose barb

Frequently Asked Questions

How do I choose the right model?
Divide the total oxygen flow your system needs by the per-diffuser rate — 9 LPM for AS80, 14 LPM for AS150 or 28 LPM for AS300.
What gas flow does each diffuser take?
AS80 takes 9 LPM, AS150 takes 14 LPM and AS300 takes 28 LPM.
How are these different from Sweetwater air diffusers?
Same glass-bonded silica body, but a smaller pore size that gives finer, more uniform bubbles for oxygen service.
Do they need more pressure than a standard diffuser?
Yes — about 5 inches H2O more than a standard Sweetwater air diffuser.
Can I use them for normal aeration?
You can, but the finer pores add pressure and maintenance, so the standard Sweetwater air diffusers are the better choice for plain aeration.
What size connection do they use?
All three models use a 1/4″ (6 mm) hose barb.
How much maintenance do they need?
More than standard diffusers — the fine pores need cleaning more often to keep the bubble pattern even.

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