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Advanced Nitrox in Tulum: 11 dive centres on TecDiveTools, with agencies, courses taught and a summary of what students say. 6 publish course prices.
TecDiveTools lists 11 dive centres teaching Advanced Nitrox in Tulum, Mexico. 6 of them publish course prices, in the currency the shop advertises and with the date each was checked — not converted, and not estimated.
Listings are ordered by how much evidence exists about their technical diving, not by a star rating, with any paid Featured listing shown first and marked as such (how rankings work). 11 of these 11 carry reviews we have read and classified as being about technical or overhead training. The count excludes recreational certifications by name, so a busy resort does not outrank a one-instructor cave operation on the volume of its reef trips. Separately, 10 have at least one instructor whose reviews we have read and summarised — a dive centre carries no synthesis of its own. How we read and count reviews.
Looking for individual instructors instead? Instructors in Tulum.
About the course
Technical diving course teaching advanced nitrox diving from EAN-21 to 100% oxygen at depths to 40m/130ft. Teaches gas planning, oxygen exposure management, gas switching procedures, and multi-gas dive planning for technical diving without staged decompression. Gateway to deeper TDI technical courses.
Land drills: oxygen analyzer use, dive planning with CNS/MOD calculations, nitrox computer setup. Pre-dive: START procedure (S-drill, Team checks, Air matching, Route, Tables). In-water: buoyancy control, air sharing, free-flow management, safety stops. Minimum 4 dives with 100 minutes accumulated bottom time, max depth 40m/130ft.
The centres listed above teach TDI Advanced Nitrox in Tulum, Mexico. Requirements are set by the agency, not the centre, so they are the same wherever you train — what differs is price, class size and how much diving is included.
11 dive centres on TecDiveTools teach TDI Advanced Nitrox in Tulum, Mexico. Each is listed above.
Deep open-circuit training is done off the Riviera Maya and Cozumel, and in deep cenotes such as The Pit, where depth, a halocline and hydrogen-sulphide cloud combine in one dive.
One centre in the TecDiveTools directory publishes a whole-course price for TDI Advanced Nitrox in Tulum, Mexico: Green Divers Tulum, at $750. Prices differ mainly in what they include, so compare the inclusions before comparing the numbers. Prices were last checked in September 2026.
