Hailea BQ-33 Self-Sinking Membrane Diffuser (330mm)

The Hailea BQ-33 Membrane Diffuser is a professional-grade aeration device designed for koi ponds, garden ponds, and aquaculture systems. Its self-sinking design, clog-free EPDM rubber membrane, and high air output of up to 95 L/min make it an efficient and reliable choice for oxygenating large ponds and fish tanks.

Key Features of Hailea BQ-33 Membrane Diffuser

✅ Self-Sinking Design – No additional weights required; automatically sinks to the bottom of the pond.
✅ Clog-Free Aeration – Flexible EPDM membrane opens and closes with air pressure, preventing dirt blockages.
✅ High Oxygen Output – Provides up to 95 liters per minute of fine-bubble aeration.
✅ Durable Build – Constructed with high-strength rubber and plastic ends for long service life.
✅ Even Air Distribution – Ensures fine bubbles across the entire diffuser length.
✅ Fish & Plant Safe – Improves oxygen levels, reduces harmful gases, and supports aquatic health.

Specifications

• Brand: Hailea
• Model: BQ-33
• Type: Membrane diffuser (self-sinking)
• Length: 33 cm (36 cm with end caps)
• Diameter: 6.5 cm (65 mm)
• Weight: 1.468 kg
• Material: EPDM rubber membrane + durable plastic ends
• Connection Hose: 10 mm & 14 mm
• Max. Air Output: 95 L/min
• Connector Size: 3/4"

How the Hailea BQ-33 Works

The BQ-33 features a clog-resistant EPDM rubber membrane stretched over an internal support. When air pressure builds, the tiny pores expand to release fine bubbles. As pressure decreases, the pores close — preventing dirt or debris from entering.

This results in:

• Efficient oxygen supply for fish and bacteria.
• Improved pond circulation and water mixing.
• Longer membrane lifespan compared to stone diffusers.

Installation

• Connect the diffuser to an air pump (capacity up to 95 L/min).
• Attach via 10 mm or 14 mm hose nozzle.
• Place directly at the pond bottom — no extra weights required.
• Ensure pump capacity matches pond size for optimal aeration.

Why Choose the Hailea BQ-33?

The BQ-33 is a professional-grade diffuser built for koi keepers, pond owners, and aquaculture farms. Unlike air stones, it provides fine-bubble aeration, resists clogging, and requires minimal maintenance. Its self-sinking design makes installation quick and hassle-free.

FAQs – Hailea BQ-33 Membrane Diffuser

Q1: Does the diffuser need extra weight to sink?
👉 No, it is self-sinking thanks to its 1.4 kg body weight.

Q2: How much air can it handle?
👉 Up to 95 liters per minute depending on your air pump capacity.

Q3: What hose sizes fit the diffuser?
👉 Fits both 10 mm and 14 mm air hoses.

Q4: Can it be used in koi ponds?
👉 Yes, it’s ideal for koi ponds, garden ponds, and aquaculture tanks.

Q5: How does it compare to air stones?
👉 The membrane design prevents clogging, lasts longer, and provides finer, more efficient bubbles than standard air stones.