PRO 2000 

• Single-hole non adjustable silent pump
• Suitable for fish tanks below 80 L
• 1 L/min maximum air output
• Power consumption: 2.55 W
• Number of vent holes: 1
• Maximum air output: 1L / min
• Product size: 106 × 62.5 × 42 mm

PRO 6000 

• Double-hole two-stage adjustable silent pump
• Suitable for fish tanks below 200 L
• 3 L/min maximum air output
• Power consumption: 3-5 W
• Number of vent holes: 2
• Maximum air output: 0.8-1.5 L/min × 2
• Product size: 142 × 83 × 56 mm

PRO 9000 

• Double-hole multi-stage fine-tuning silent pump
• Suitable for fish tanks below 400 L
• 4 L/min maximum air output
• Power Consumption: 3.5W
• Number of vent holes: 2
• Maximum air output: 1-2 L/min × 2
• Product size: 159 × 89 × 57 mm