Nitrox (enriched air) replaces some of the nitrogen in normal air with oxygen. With less nitrogen going into your body, your no-decompression limits get longer, so you get more time underwater on each dive.
SDI teaches nitrox the way divers use it today: with a dive computer. You learn to analyse your gas, set your computer for the mix and plan dives that stay within your oxygen limits.
No dives are required. The gas analysis practice is hands-on with real analysers and real nitrox cylinders.
The SDI Computer Nitrox Diver course needs no open water dives to certify, so it is one of the quickest specialties to finish.
If you'd like to try Nitrox diving during your certification, we can add 1–2 optional Nitrox dives at Grandé Island on the same day as your theory session. Grandé Reef and Shelter Cove at 10–18m are great for a first Nitrox dive; you'll see the longer NDL on your computer straight away.
Here's what is different about diving with us.
Pro-grade gear serviced every 100 dives or 6 months, not when it fails. MK25/S620 regulator, Hydros Pro BCD, Aladin Sport dive computer. You train on the same kit our working instructors use.
Your instructor always knows where you are underwater. No crowded groups. If a skill needs more practice, you get the time, not whatever's left over after 8 other students.
We teach all three agencies at the same location, so you can pick the certification that fits your future dive plans. You get honest advice, not a push toward whichever we sell more of.
Proper briefing rooms, clean rinsing stations, a structured course schedule. The difference between a real dive school and a beach shack matters when you're doing a multi-day certification course.
We stock Nitrox fills at the dive centre, so you don't have to wait until your next trip to use your new qualification. Do the theory in the morning, dive Nitrox that afternoon at Grandé Island. The Aladin Sport computers on all our rental kit handle Nitrox programming out of the box.
Every nitrox card lets you dive on enriched air worldwide. Here is how the three courses compare at FlyingFish.
| At FlyingFish, Goa | SDI Computer Nitrox Diver You are here | SSI Enriched Air Nitrox | PADI Enriched Air Diver |
|---|---|---|---|
| Price at FlyingFish | |||
| Course price | ₹8,910+ GST ₹990 less than SSI · ₹8,960 less than PADI | ₹9,900+ GST | ₹17,870+ GST |
| Pay online to book | ₹5,000, rest at the centre | ₹5,000, rest at the centre | ₹10,000, rest at the centre |
| The course | |||
| Minimum age | Advantage: 10, with parent consent | 10 | 12 |
| You need | Open Water from any agency | Open Water, or take it alongside | Open Water |
| Oxygen mixes | 22% to 40% | EANx32 and EANx40 | Up to 40% |
| Dives needed | None | None | None, dives are optional |
| Days | 1 Day | 1 to 2 Days | 1 to 2 Days |
| How you learn | |||
| Theory | Classroom with your instructor | Classroom with your instructor | PADI digital learning, included |
| Hands-on | Advantage: Analyse 2 cylinders and set your computer for nitrox | Oxygen analyser practice | Tank analysis practice |
| Your card | |||
| Nitrox fills worldwide | Yes | Yes | Yes |
| Expires | Never | Never | Never |
| Book SDI | Book SSI View course | Book PADI View course | |
Facts from each agency's published standards, checked November 2026. Prices per person, GST extra.
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