Increase your bottom times and shorten your surface intervals

Nitrox Specialty

5/5 - 19 reviews

5,500 ฿

Days
Half day
# of Dives
Dry course
Prerequisites
Open Water certification

We’ve all been there. You’re down on a dive, looking at something really neat, and suddenly you have to leave because your no-decompression limit time is running out. Don’t let that happen to you again! It’s time to get your Nitrox Specialty certification.

The Nitrox Specialty course is an essential certification for all serious divers. It will allow you to extend the time you can spend at depth and reduce your surface interval time. It’s perfect for people who want to get the most out of a scuba trip where the itinerary includes several deep dives a day, or for people looking to check a liveaboard dive trip off their bucket list.

The Nitrox Specialty course will teach you how to safely plan and dive with enriched air mixtures of up to 40% oxygen. You’ll learn how to analyze a tank of Nitrox gas and why it’s important to do that before each Nitrox dive. Scuba diving with enriched air can increase your no-decompression limits, increase your safety, and reduce the required length of your surface intervals when compared to air.

Our Nitrox Specialty course starts every day at 9 am and is usually completed by lunchtime. There is no diving required to complete this course.

You will then be able to fun-dive with us on Nitrox for 2400B per 2 dives 🙂

You must be an Open Water Diver to become a Nitrox Specialty diver.

Don’t forget! Because of the extra nitrogen your body builds up while scuba diving, you cannot fly within 24hrs of your last dive.

Are you fit to dive?

Scuba diving is an activity that requires a certain level of physical health. Read this medical questionnaire. If you can answer yes to any of the questions you may require medical clearance to enrol in a diving course. Contact us for more information.

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FAQs

What is Nitrox, and how does it differ from regular air? +

Nitrox is enriched air with a higher percentage of oxygen (typically 32% or 36%) than regular air, which contains 21%. The increased oxygen allows for longer no-decompression limits, especially at moderate depths.

What are the benefits of diving with Nitrox? +

Nitrox allows divers to extend their bottom time at certain depths by reducing nitrogen intake. This can also help reduce fatigue after dives, especially during repetitive dives.

Do I need special equipment to dive with Nitrox? +

Most modern dive gear is compatible with Nitrox, but tanks need to be properly cleaned and labeled for Nitrox use. Additionally, you will need an oxygen-compatible dive computer to track your oxygen exposure.

Is there a depth limit when diving with Nitrox? +

Yes, because of the higher oxygen content, Nitrox divers need to be cautious about oxygen toxicity. Depth limits vary depending on the mix but typically range from 30-40 meters.

Is there a prerequisite for taking the SSI Nitrox Specialty? +

The only prerequisite for the SSI Nitrox Specialty is an Open Water Diver certification (or equivalent). No advanced certification or additional dives are required to take the course.

Reviews

5/5 - 19 reviews

I did my 3 day Open Water Diving course with Big Blue Diving and it was an amazing experience. Our instructor Emma was really great. She taught everything very clearly and had a very friendly vibe, like a friend teaching you. Because of her, I felt very confident while diving. The whole team at Big Blue was very supportive and professional. I am now looking forward to doing my Advanced course aswell with them. Highly recommended for anyone who wants to learn diving. Nitish Tulsian

Very good school. Instructors are all super friendly. Especially Harry, he's a jolly good fellow! I highly recommend this place to do your open water exam John Wick

I had an incredible time doing the Advanced Diving Course with Mikkel! He’s super friendly, calm, and professional, which made the whole experience so enjoyable and relaxing. We saw so many amazing sea creatures — countless fish, a stingray, and even a sea snake! We also learned a lot about the physics of diving, and going down to 30 meters was absolutely mind-blowing. Highly recommend taking a course with him — it was unforgettab אריק אפליצ'וק

The best diving center! Everyone is super friendly and ready to help you. If you want to have the best instructor, ask for Carolina, she is the best!! Benjamin Leiber

I would like to sincerely thank my divemasters EJ and Jannik – diving with you was an amazing adventure! You are both fantastic at what you do: relaxed, fun, kind, and at the same time very professional and knowledgeable. It was such a pleasure to meet you and dive with you. Hopefully next time the current will be kinder to me so I can explore more of Sail Rock! The dive school itself is also excellent – everything was well-organized, the atmosphere was super friendly, and the equipment was great. The full-day trip was perfectly planned, with delicious food served on the boat. Communication was easy and smooth from the very beginning. I can highly recommend Big Blue to anyone looking for a great diving experience. Thank you again to the whole team – I hope to be back next year! Beata Gudyka

I took the open water course with Sarah Ebertz as my coach. Very professional and friendly. I felt very safe. LUkas Michler

I did my upgrade from scuba diver to open water certification here and it was great. My instructor, Steph, answered all my questions in depth to make sure I fully understood everything and helped me improve my diving skills underwater. Their equipment is in great condition, their facilities are nice and clean, and the staff is very kind and friendly. Would highly recommend. Vincent Chouinard

Having dived with several other schools in Koh Tao, I can confidently say Big Blue are the best! My partner and I did a few days diving with Nadine, who was a fantastic guide to some of the best diving we’ve experienced around the world. She was friendly, encouraging and very professional. Nadine gave great briefs with her local knowledge of the dive sites, coral and marine life. A brilliant dive master who made us feel confident and safe! Already planning when we can return! Caitlin McFarlane

The perfect diving experience from start to finish! My partner and I took a refresher course and an afternoon fun dive with Nico. He brought us back up to speed and more; professional, friendly and attentive - couldn’t have asked for a better way to get our confidence and skillset ready for open water again. Nico is a credit to the Big Blue team. We’ll definitely be back! GGB 123

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