Ring-shaped air stone diffusers with a porous blue ceramic element set in an orange plastic frame. The ring format spreads fine bubbles across a wider area than single-point or flat disc-type airstones, giving effective aeration from a smaller pump output.
Suitable for aquariums (freshwater and marine), hydroponic systems, and aquaponic tanks. The 4.5mm nozzle connects directly to standard 4mm air line — no adaptors needed.
- Porous ceramic element: produces fine, evenly distributed bubbles in a ring pattern
- 4.5mm nozzle: fits standard ‘4mm’ air line without adaptors or connectors
- Ring format: wider aeration coverage than disc or golf ball airstones from the same pump output
- Efficient: effective bubble spread from lower-output pumps compared to larger disc-type diffusers
- Easy maintenance: rinse to clean
- Dual use: suitable for aquarium (freshwater and marine) and hydroponic applications
| Variation | Outer Diameter |
|---|---|
| Small | 3" (7.5cm) |
| Medium | 4" (10cm) |
| Large | 5" (12.5cm) |
All sizes share the same 4.5mm nozzle and connect to standard 4mm air line.
Technical Details- Diffuser material: Porous ceramic
- Frame material: Plastic (orange)
- Nozzle: 4.5mm, suits standard ‘4mm’ air line
- Sizes available: 3" (7.5cm), 4" (10cm), 5" (12.5cm)
- Air pump: Not included — requires a separate air pump and 4mm air line
All stock is here in Dorset UK ready to go!
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Our listings may describe uses and applications drawn from manufacturer guidance or common product use. These descriptions are provided for general information only. It is the responsibility of the buyer and end user to assess suitability for any specific application and to seek professional or specialist advice where appropriate. We make no warranty that any product is suitable for a particular purpose.
When you buy from us you are supporting a small family business based in Dorset UK and you can be sure that your order will be treated with heartfelt appreciation and gratitude.
We are eBay specialists in hydroponics, aquatics, irrigation and garden products, with a focus on quality, reliability and competitive prices. The Gardeners Wild brand has been trading on eBay since 2011.
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