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OCEAN REEF Octo Review: Backup second stage for QC-equipped divers

OCEAN REEF Octo w/QD Miflex Hose
4.5
[Balanced Second Stage]  Balanced design ensures smooth breathing and consistent performance underwater.
[Pre-Dive Switch]  Dive pre-dive switch for reliable, effortless activation and safety control.
[Quick-Connect Compatible]  Includes male quick-connection fitting for fast, secure hookups to QC systems.
[Bright 48in Yellow Hose]  120cm (48in) QC Extraflex yellow hose offers visibility, flexibility, and durability.
[Bailout Ready]  Ideal IDM backup for divers using QCs, enables conventional secondary second-stage bailout.
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Diving backup that keeps alternate-air arrangements simple for divers by pairing a balanced second stage with a quick-disconnect hose. The OCEAN REEF Octo includes a dive pre-dive switch, a male quick connection part and a 120cm/48” QC Extraflex Yellow hose for straightforward bailout options. Is it the right choice for IDM divers and teams who rely on quick connections?

⚡ At a Glance
  • Breathing Performance: Balanced second stage for consistent breathing effort throughout a dive
  • Best for: IDM divers and buddies who use quick-connect (QC) systems and need a conventional secondary option
  • Not ideal for: Divers who never use quick connections or who prefer integrated octopus solutions

Balanced second stage with a dive pre-dive switch simplifies readiness and control. A male quick connection part and a 120cm/48” QC Extraflex Yellow hose provide a familiar QC bailout configuration.


Dependable bailout breathing – thanks to a balanced second stage

Balanced second stages are designed so downstream and upstream pressures remain closely matched, helping to keep inhalation effort stable as tank pressure changes. The description confirms a balanced design is used for the backup second stage.

Steady and predictable breathing effort during emergency air-sharing. Suits divers who value a conventional alternate-air source when swapping regulators.

Quick compatibility with QC systems – with a male quick connection part and QC hose

A male quick connection part is included alongside a 120cm/48” QC Extraflex Yellow hose, matching common quick-disconnect fittings used by many setups. The Extraflex hose design typically offers flexible routing for easier handling.

Fast connection to buddies or QC-equipped first stages for rapid bailout. Hose length supports comfortable reach during an out-of-air scenario.

Clear ready/start handling – with a dive pre-dive switch

A dive pre-dive switch is fitted to the second stage, allowing the breathing unit to be set before entering the water. The feature is specifically noted in the product description.

Simple pre-dive configuration reduces fumbling at the surface. Useful for divers who want a predictable state for an alternate regulator before descent.

✨ The 4 Key Reasons for OCEAN REEF Octo
  1. 120cm/48” QC Extraflex Hose – Allows comfortable reach for most buddy-sharing positions
  2. Male Quick Connection Part – Enables immediate hookup to QC-equipped first stages or buddies
  3. Dive Pre-dive Switch – Lets divers set the secondary ready state before water entry
  4. Bright Yellow Hose – Improves visibility and rapid identification during emergency procedures
📋 Technical Details at a Glance
  • Category: Sports / Diving backup regulator
  • Brand: OCEAN REEF
  • Second Stage Type: Balanced second stage
  • Hose Length: 120cm / 48”
  • Hose Type: QC Extraflex Yellow hose
❓ Frequently Asked Questions

Q: Is the Octo compatible with quick-disconnect systems?

A: Yes, a male quick connection part is included and the unit comes with a 120cm/48” QC Extraflex Yellow hose intended for QC setups.

Q: What does balanced second stage mean here?

A: The description confirms a balanced second stage is used, which is intended to keep breathing effort consistent across differing tank pressures.

Q: Who should consider this backup second stage?

A: IDM divers and anyone regularly diving with buddies who use quick connections should consider this option for a conventional secondary bailout alternative.

🏆 Our Verdict

Suited for IDM divers and buddy teams who rely on quick-disconnect systems and want a conventional alternate-air option. The combination of a balanced second stage, a dive pre-dive switch and a dedicated 120cm QC Extraflex Yellow hose makes bailout preparation straightforward and familiar. While individual buying decisions depend on existing kit, the clear compatibility and readiness features deliver practical long-term value for QC-equipped divers.