The Apollo Bio Micro Filter 1/2″ is a second-stage regulator from Apollo – the piece that delivers air to your mouth on demand. Balanced and responsive, it breathes effortlessly at depth, making every breath as easy as the last whether you’re cruising the reef at Tioman’s diverse coral gardens or hovering in the blue.
Technical Specifications
| Specification | Details |
| Brand | Apollo |
| Product | Bio Micro Filter 1/2″ |
| Stage | 2nd Stage |
| Type | Piston |
| Material | Chrome / Brass |
| Connection | DIN / Yoke |
| Best For | Recreational diving |
Key Features
- Balanced demand valve: Delivers air smoothly and effortlessly at any depth.
- Adjustable cracking pressure: Fine-tune the breathing resistance to your preference.
- Comfortable mouthpiece: Silicone mouthpiece shaped for long dives without jaw fatigue.
- Purge button: One-touch clearing keeps the regulator ready to breathe.
Suited for Malaysian Dive Sites
The Apollo Bio Micro Filter 1/2″ is built to perform across Malaysia’s best underwater destinations. Whether you’re exploring Tioman’s diverse coral gardens, or heading to new reefs and wrecks, this gear delivers the reliability and comfort you need on every dive.
Care & Maintenance
- Rinse after every dive.
- Purge a few times before and after each dive to flush sand.
- Replace the mouthpiece when it starts to harden or crack.
- Service alongside the first stage – they’re a system.
Final Verdict
Every breath underwater starts here. The Apollo Bio Micro Filter 1/2″ delivers smooth, effortless air at any depth – exactly what you want from a second stage.






Ivan Lim –
Easy to install and I noticed a definite improvement in air quality while diving. No more odd tastes or moisture in the regulator. Would recommend especially if you dive frequently in different locations.
Hui Lin Tan –
Used the Apollo Bio Micro Filter 1/2″ on two weekend dives—air felt noticeably cleaner and no musty smell at all. Installation was straightforward, fit my regular setup perfectly.
Junhao Lo –
Thank you, Ms. Tan, for your feedback. We’re glad the installation and air quality met your expectations—please let us know if you need further support on your next dives.
Arul Raj –
Does this filter fit older regulator models or only newer ones? I use a first-gen Aqualung Titan set.
Junhao Lo –
Hi Mr. Raj, the Apollo Bio Micro Filter 1/2″ is designed with a universal 1/2-inch fitting and should be compatible with most standard regulators, including first-gen Aqualung Titan sets. If you have specific compatibility concerns, please share your exact model details so we can confirm for you.
Jason Lim –
Solid build quality—seems very durable, even after several saltwater dives. Slight increase in breathing resistance but barely noticeable.
Imran Hanafiah –
Thank you for your comments, Mr. Lim. We appreciate your input and are pleased to hear that durability met your needs—let us know if you have any concerns about breathing resistance or require adjustment tips.