with Hydronauts


Nitrox is a breathing gas with a higher concentration of oxygen than normal atmospheric air. Diving on Nitrox offers the benefit of staying at certain depths for a longer period of time by extending your no decompression limits (NDL). 

Diving on Nitrox is especially advantageous when doing multiple dives in a day or short period of time. For example, many people take the Nitrox diving course ahead of diving on a liveaboard trip where four or five dives are offered each day. 

Diving on increased oxygen content presents its own physiological and logistical risks. Taking the Enriched Air Nitrox course teaches you about these risks and how to mitigate them. 

We recommend combining the Nitrox course with Explorer 30 and/or Deep 40.

This course can be conducted in two ways:

1. Theory only – 1 Day – 5,500 THB

2. Theory + 2 Open Water Dives – 2 Days – 8,000 THB


Must be 15 years of age or older.

Must be a certified Open Water diver. 

Have a minimum of 8 hours logged underwater in an Open Water environment.

If you’re not sure you meet these prerequisites or if you need to complete a prerequisite course, reach out to us. 

We would love to help you and we will do our best to respond to all inquiries within 12 hours.

Step 1 -
Online Study

Begin your e-learning online before you arrive.

Your training starts online where you will access all your RAID training manuals and quizzes. Contact us to get started with your e-learning!

Step 2 - Theory & Workshops

On arrival, you will meet your instructor who will review your pre-completed e-learning with you. Your instructor will conduct a Nitrox workshop and help you practice analyzing your tanks. 

Optional Step 3 - Open Water Dives

Now its time to put what you’ve learned online and with your instructor into use on a 1-day, 2 dive trip on Enriched Air Nitrox!


Flying after your dives? Be sure to give yourself an 18-hour window after your final dive.

Need a place to stay? We are a beachfront diving resort! We offer rooms from mixed dorms, double bedrooms, family rooms, and bungalows for weekly or monthly rent! You can book a room here

Please keep hydrated. Remember to drink plenty of water before and after your dives.

Bring sunscreen (preferably reef safe) and apply it an hour before entering the sea to protect marine life.

Why Choose Hydronauts?​

RAID Instructors​

Our experienced instructors are hand-picked, highly trained, and passionate about scuba diving. We tailor each course and dive to your unique needs.

Beachfront Diving Resort​

Southwestern-facing property including a dive shop, hotel, training pool, cafe & restaurant, dive boat, and beach bar. We offer diving & accommodation packages for every budget.

Guaranteed Small Groups

We guarantee small groups of no more than four students to an instructor or dive guide so that you get the individual attention you deserve.

State-of-the-Art Equipment

We choose to dive and teach in Backplate & Wing BCD with a Long-hose, Short-hose regulator configuration favored by technical divers.

Dive Anywhere in the World

Upon completion of your RAID scuba diving course, you will be issued with an e-certification card that recognizes you as an internationally certified scuba diver.

Low Carbon Footprint

We make every effort to reduce our footprint and use of paper and plastic. All our course materials are hosted online giving you access for life.

Reserve your space now