Nitrox diving is used a lot in places where the attractions are deeper than usual, and we try to lengthen the bottom time without going into deco. It is very useful in pelagic dives, for example, such as those made in the Revillagigedo archipelago.
The EANx certification allows you to learn how to dive with air with a higher oxygen content, which will allow you to have more bottom time at certain depths. This certification can be obtained in 1 day, which makes it ideal for people who dive regularly.
You will discuss managing oxygen exposure.
You will practice analyzing the oxygen content of your scuba tank.
You will set your dive computer to dive with enriched air nitrox.
Must have PADI Open Water certification and be at least 12 years old.
In a practical way, you will train to analyze the oxygen content of your own cylinder, eliminating guesswork and ensuring the correct blend. Finally, you will know how to adjust your dive computer to the exact Nitrox percentage, a crucial step to unlock your additional bottom time. The Enriched Air Diver (Nitrox) course is not just a specialty; it is the single investment that guarantees you an immediate and quantifiable increase in your bottom time, an unparalleled advantage that has made it the world's most popular course. Forget the pressures of traditional air’s no-decompression limits. With Nitrox, you gain the ability to drastically extend your underwater explorations, especially on repetitive dives and during your precious vacations. If your goal is more time with manta rays, more minutes on that epic wreck, or simply feeling less fatigued at the end of the day, Nitrox is the key that unlocks extra hours in the blue world.
The Enriched Air Diver (Nitrox) course is, without a doubt, the most popular diving specialty worldwide, and for an irrefutable reason: it gives you more bottom time immediately. By breathing air enriched with an oxygen percentage higher than 21% (usually 32% or 36%), you reduce the amount of nitrogen your body absorbs. This simple change allows you to significantly extend your no-decompression limits, making it the essential upgrade for any diver who wants to maximize their dives, especially on repetitive dive trips, such as the famous Liveaboards. You can obtain this certification in just one day of training, making it the fastest and most cost-effective investment for your future adventures.
Beyond the extra time, the Nitrox course empowers you with critical control skills that make you a safer and more precise diver. You will learn to master oxygen exposure management, a fundamental protocol for safety with enriched mixtures. Additionally, many divers report feeling less fatigued after repetitive dives with Nitrox, improving their overall well-being and allowing them to fully enjoy full days of exploration.
It is crucial to understand the true purpose of Nitrox. Contrary to a common myth, Nitrox is not used to go deeper; in fact, the higher oxygen content establishes a maximum operating depth limit (MOD) that must be respected. The true power of this certification lies in allowing you to stay longer at moderate depths (18m to 30m) where most marine life and reef attractions are concentrated. By mastering the Nitrox formula, you gain the ability to double the no-decompression time on many dives, ensuring that every minute underwater counts.
The direct benefit is extending your bottom time (No-Decompression Limit - NDL). By using Nitrox, you breathe less nitrogen than with air. Less nitrogen means your tissues saturate slower, allowing you to stay longer at the depth where the greatest attractions are found, especially during repetitive dives on multi-day trips. In many cases, Nitrox can double your safe bottom time at moderate depths (18-30 meters).
No! This is the biggest myth in diving. Nitrox is not for going deeper, but for staying longer at moderate depths (typically between 18 and 30 meters). In fact, the higher oxygen content in the mixture imposes a stricter maximum operating depth (MOD) limit than air, due to the risk of oxygen toxicity. The course will teach you precisely how to calculate and respect this safety limit for each mixture.
Many divers consistently report a reduced feeling of fatigue or "dive hangover" after a day of dives with Nitrox. Although the science behind the reduction of fatigue is still debated, the lower absorption of nitrogen in your body translates into a better sense of well-being and faster recovery between dives. This is a huge benefit for any diver who wants to maximize their vacation days.
The course is surprisingly fast, with the theory and practical sessions able to be completed in just one day (or less with eLearning).
Not necessarily. For recreational blends (up to 40% oxygen), your standard diving equipment (wetsuit, fins, mask) is perfectly compatible. However, your dive computer must have the Nitrox function, and your cylinders must be properly labeled. The course thoroughly covers the compatibility of your equipment to ensure you dive with complete safety and efficiency.
