Description
InWater Tech Aluminum Frame Diffuser 300mm (12″)
High Efficiency Ceramic Oxygen Diffuser for Freshwater Aquaculture
The InWater Tech Aluminum Frame Diffuser 300mm is a professional-grade ceramic oxygen diffuser engineered for efficient oxygen transfer in freshwater aquaculture systems. Designed to produce a consistent micro bubble pattern, this compact diffuser improves dissolved oxygen levels by creating ultra-fine bubbles that remain suspended in the water longer than traditional aeration systems.
Manufactured using high-quality ceramic technology, the diffuser provides excellent oxygen dissolution efficiency while helping reduce oxygen consumption and operating costs. Its durable aluminum frame is designed for long-term reliability in demanding freshwater environments, making it suitable for both small-scale and commercial aquaculture operations.
The 300mm diffuser is ideal for:
- Fish hatcheries
- Fingerling tanks
- Recirculating Aquaculture Systems (RAS)
- Aquaponics systems
- Fish transport tanks
- Live holding systems
- Oxygenation systems
- Research facilities
- Small grow-out tanks
- Water treatment applications
The ceramic diffuser element is resistant to chipping and peeling and delivers reliable micro bubble performance for efficient oxygenation.
Key Features
High Efficiency Micro Bubble Technology
Produces ultra-fine oxygen bubbles that increase dissolved oxygen absorption and improve oxygen transfer efficiency.
Durable Aluminum Frame
Heavy-duty aluminum construction designed specifically for freshwater aquaculture applications.
Compact 300mm Design
Perfect for smaller tanks, hatcheries, transport systems, and applications where space is limited.
Integrated Check Valve
Helps prevent backflow of water into the oxygen supply line. The valve opens automatically when operating pressure exceeds 8 psi.
Durable Ceramic Surface
Designed to resist chipping and peeling for long-term reliability and consistent performance.
Easy Maintenance
Simple cleaning process helps restore even bubble distribution and maintain oxygen transfer efficiency.
Technical Specifications
| Specification | Details |
| Product Code | 10581 |
| Product Name | InWater Tech Aluminum Frame Diffuser |
| Diffuser Length | 300mm (12″) |
| Case Size | 370 x 80 mm |
| Stone Size | 297 x 60 mm |
| Weight | 1 kg |
| Material | Aluminum Frame |
| Diffuser Type | Ceramic Oxygen Diffuser |
| Application | Freshwater |
| Flow Rate | 1 – 3 LPM |
| Recommended Operating Pressure | 20 – 30 PSI |
| Maximum Pressure | 50 PSI |
| Connection Size | 1/4″ Barb |
| Bubble Type | Micro Bubble |
Oxygen Transfer Performance
The InWater Tech 300mm ceramic oxygen diffuser is designed to maximize oxygen dissolution and improve overall system oxygenation efficiency.
| Operating Pressure | Recommended Flow Range |
| 21–35 PSI | 1–3 LPM |
| 28–42 PSI | Optimized Oxygen Transfer |
Benefits of Micro Bubble Oxygen Diffusion
| Benefit | Result |
| Ultra-fine bubbles | Increased oxygen transfer |
| Longer bubble suspension | Improved dissolved oxygen |
| Reduced oxygen waste | Lower operating costs |
| Stable oxygen levels | Improved fish health |
| Efficient oxygen utilization | Better system performance |
Freshwater Aquaculture Applications
The aluminum frame diffuser is designed specifically for freshwater systems and is commonly used in:
- Barramundi farming
- Trout hatcheries
- Tilapia systems
- Native fish hatcheries
- Ornamental fish systems
- Aquaponics
- Fingerling production tanks
- Research aquaculture systems
For saltwater systems, plastic frame diffuser models are recommended.
Installation Guidelines
For best oxygen transfer performance:
- Install the diffuser horizontally.
- Ensure the diffuser is fully submerged before pressurizing.
- Position deeper in the water column for improved oxygen dissolution.
- Avoid obstructing the diffuser surface.
- Use compatible oxygen regulators and flowmeters.
- Do not exceed 50 PSI supply pressure.
The included check valve helps prevent water from entering the oxygen line during operation.
Maintenance
Routine maintenance helps ensure consistent bubble patterns and optimal oxygen transfer efficiency.
General Cleaning
- Scrub with a hard bristle brush
- Rinse with clean water
- Remove slime and deposits
Restoring Performance
If fouling reduces flow:
- Dry the diffuser completely
- Sand the ceramic surface lightly using coarse grit sandpaper (#40–#60)
- Remove the fouled surface layer
Important Notes
- Avoid oil contamination
- Prevent physical shock
- Store dry when not in use
Advantages Over Standard Air Stones
| Standard Air Stones | InWater Tech Ceramic Diffuser |
| Coarse bubbles | Ultra-fine micro bubbles |
| Lower oxygen efficiency | High oxygen transfer efficiency |
| Shorter lifespan | Durable ceramic construction |
| Uneven bubble patterns | Consistent micro bubble distribution |
| Limited commercial use | Suitable for professional aquaculture |
Ideal For
- Fish hatcheries
- Small aquaculture tanks
- Fingerling systems
- Aquaponics
- Live holding tanks
- RAS systems
- Oxygenation systems
- Research facilities
- Water treatment systems
