TDI Deco Procedures

Technical Diving · Planned Staged Deco to 150 ft · For Experienced Divers

Dive past the recreational ceiling. Decompression Procedures certifies you to plan and execute staged decompression dives to 150 feet, where you run a planned series of ascent stops instead of surfacing directly. You'll learn to build the ascent, stop depths, times, gases, and contingencies, and to switch between back gas and dedicated deco gases in the water. It's a serious technical certification, and for most divers it's taught together with Advanced Nitrox, the two were designed as a pair. You'll need your own mask, fins, boots, and snorkel; stage cylinders, deco regulators, a BCD, and tanks are available to rent from us or bring your own.

Veterans can put their GI Bill toward their training, and families can use ESA or ClassWallet funds. See if you qualify.

Starting from

$799.00

Availability: Contact us for booking information

Description
Additional Information

TDI Advanced Nitrox Diver Course

Technical Diving · Enriched Air to 100% · For Certified Nitrox Divers

Advanced Nitrox is where enriched air becomes a technical tool. Instead of the recreational cap, this course certifies you to dive any mix from EAN 21 all the way to 100% oxygen on no-decompression dives to 130 feet. You'll learn the real physics and physiology behind high-oxygen diving, how to plan with oxygen limits, and how to configure oxygen-clean equipment. It's a genuine technical certification, and it's the foundation the rest of the technical path is built on. It's also the natural next step after TDI Nitrox and Intro to Tech.

What it unlocks

This is the certification that opens the technical door:

Dive any mix from EAN 21 through 100% oxygen on no-decompression dives
Get maximum bottom time out of high-oxygen mixes at technical depths
Build the gas-planning foundation every technical course after this relies on
Qualify to move on to Decompression Procedures and rebreather training

What you'll learn

This is real technical theory, taught so you can apply it under pressure.

The physics of higher oxygen partial pressures at depth
CNS and pulmonary oxygen toxicity, and how to stay within limits
Oxygen limit tables and using a computer with high-O2 mixes
Oxygen-clean and oxygen-compatible equipment, plus an intro to gas blending

In-water skills you'll demonstrate

The open water dives prove you can hold technical standards in the water.

Precise buoyancy control and horizontal trim
Team awareness and air sharing
Managing a regulator free-flow
Controlled safety stops and stress analysis

Usually taught with Decompression Procedures

For most divers, Advanced Nitrox and Decompression Procedures are taught together as one combined program, since Advanced Nitrox supplies the high-oxygen gases that make accelerated decompression possible. Ask us about doing them as a pair, it's the most common and most efficient path.

Who can enroll

You'll need a nitrox foundation and some real dives behind you.

Certified TDI Nitrox divers, or equivalent
Proof of 25 logged open water dives
Minimum age 15 with parental consent, 18 without

Where it leads

Advanced Nitrox is the launch pad for the rest of technical diving.

Decompression Procedures, most often taken alongside this course
Semi-closed and closed-circuit rebreather training
The gas foundation for deeper and longer technical dives
Pairs naturally with the Sidemount path

✓ What's included

Instruction and your open water technical training dives
The TDI Advanced Nitrox knowledge materials
Rental gear available: oxygen-compatible cylinders, regulators, and BCD
Your TDI Advanced Nitrox certification on completion

What to bring

Your own mask, fins, boots, and snorkel (required, we don't rent these)
Oxygen-compatible cylinders, regulators, and a BCD (required for the course, available to rent from us, or bring your own)
Your TDI Nitrox certification card and proof of 25 logged dives
A swimsuit and a towel

Frequently Asked Questions

How is this different from regular nitrox?

Recreational nitrox caps out around 40% oxygen. Advanced Nitrox certifies you to dive any mix from EAN 21 all the way to 100% oxygen on no-decompression dives to 130 feet, and it teaches the technical-level physics, physiology, and gas planning behind high-oxygen diving.

Should I take this with Decompression Procedures?

Most divers do. Advanced Nitrox and Decompression Procedures are usually taught together, because Advanced Nitrox provides the high-oxygen gases that make accelerated decompression work. Call us and we'll set up the combined program.

What are the prerequisites?

You need to be a certified TDI Nitrox diver or equivalent, show proof of 25 logged open water dives, and be at least 15 with parental consent, or 18 without.

Does this let me do decompression dives?

This certification is for no-decompression dives using high-oxygen mixes. Planned decompression is the focus of the Decompression Procedures course, which is why the two are so often taken together.

What gear do I need?

Your own mask, fins, boots, and snorkel, plus oxygen-compatible cylinders, regulators, and a BCD for the technical portion. Those are available to rent from us, though divers who train on their own equipment are better prepared for everything that follows.

Is there a lot of theory?

Yes, and it matters. High-oxygen diving is safe when you understand oxygen exposure, so the course covers CNS and pulmonary oxygen toxicity, oxygen limit tables, and gas planning in real depth.

Let's. Go. Diving.

Ready to make the jump to technical diving? Call the shop and we'll map out Advanced Nitrox, and whether to pair it with Deco.

📞 Call the shop (480) 881-4013

A technical certification for high-oxygen, no-decompression diving from EAN 21 through 100% oxygen to 130 feet. Prerequisites: certified TDI Nitrox diver (or equivalent) and 25 logged dives. Most often taught with Decompression Procedures.

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