Alternate Air Sources

Cressi XS Octopus

89 reviews

SKU: CSBOXS

~~$189.95~~ Save: $60 (32%)

^$129.95

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In Stock

DESCRIPTION

A reliable and high-performance Cressi XS Octopus with a lightweight design and dependable valve.

Pros

Great performance and breathability
Good value for the price
Easy to use and adjust
Budget-friendly
Reliable and durable

Catalina Pony Bottle Tanks with Pro Valve

70 reviews

SKU: AQUTP40

~~$299.95~~ Save: $30 (10%)

^$269.95

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In Stock

DESCRIPTION

A reliable, nitrox-ready aluminum pony tank with high flow capacity valve and convertible K-valve.

Pros

Perfect size for various needs
Sufficient air capacity
Economical price
Reliable backup option
Versatile for different diving scenarios

Scubapro Air 2, Combination Octopus/Inflator Regulator

49 reviews

SKU: SCPA2GYR

^$329

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In Stock

DESCRIPTION

A durable and versatile combination octopus/inflator regulator with easy-to-use features and a classic design.

Pros

Breathability
Reduces clutter and eliminates hoses
Convenient and practical
Combination of octopus and inflator
Streamlined design

Octopus Holder with Split Ring

38 reviews

SKU: AQUOHOR

~~$6.95~~ Save: $2 (29%)

^$4.95

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In Stock

DESCRIPTION

A corrosion-resistant octopus holder with a bright color for easy identification and debris prevention.

Pros

Keeps debris out
Bright color for easy identification
Prevents damage to reefs
Fits mouthpiece perfectly
Works great

Mares Prestige 15X and Prestige Octopus Package

32 reviews

SKU: MRSPKPRGY

~~$619.90~~ Save: $170.90 (28%)

^$449

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In Stock

DESCRIPTION

A lightweight Mares regulator package with diaphragm first-stage, 4 LP ports, and 2 HP ports.

Mares Prestige Octopus

30 reviews

SKU: MRSPRO

~~$169.95~~ Save: $45.00 (26%)

^$124.95

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In Stock

DESCRIPTION

A compact and reliable octopus with easy breathing and durable housing.

Pros

Good value for the price
Suitable for beginners
Durable and long-lasting
Easy breathing
Reliable performance

Suunto Transmitter Only for Air Integrated Wrist Computers

29 reviews

SKU: SQTVTCT

~~$399~~ Save: $134 (34%)

^$265

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In Stock

DESCRIPTION

A streamlined transmitter for air-integrated wrist computers with easy installation and unique functions.

Pros

Convenient air integration
Helpful customer service
Easy installation and setup
Seamless syncing
Reliable performance

Aqualung Calypso/Titan Octopus

28 reviews

SKU: UDRCTO

^$239

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In Stock

DESCRIPTION

A reliable and easy-to-use octopus with a silicone mouthpiece and polycarbonate housing.

Pros

Great breathability
Reliable and easy to use
Prompt delivery and well-packed
Inexpensive and good value
Works well in cold water

Skum-Ball Octopus Holder with Clip

24 reviews

SKU: AQUSOHRD

~~$9.95~~ Save: $3.00 (30%)

^$6.95

+ wishlist

In Stock

DESCRIPTION

A colorful octopus holder with clip that secures and protects mouthpiece, preventing free flow and debris.

Pros

Good price
Keeps debris out of mouthpiece
Works well
Easy to use
Secure hold

Aqualung ABS Octopus

22 reviews

SKU: UDRABS

^$219

+ wishlist

In Stock

DESCRIPTION

A reliable, nitrox-ready octopus with good breathing performance and a quick-release mounting clip.

Pros

Well-designed
Good price
Easy to fold
Compact size
Breathable

Dive Rite Octopus Holder

18 reviews

SKU: DIV2086

^$5.75

+ wishlist

In Stock

DESCRIPTION

A non-corrosive plastic octopus holder with a 360-degree swivel design for secure and convenient storage.

XS Scuba Pony Bag

14 reviews

SKU: XSSPBB19

^$27

+ wishlist

In Stock

DESCRIPTION

A sturdy and secure pony bag with self-draining mesh bottom, ideal for connecting to primary diving cylinder.

Tank to Tank Equalizer with Pressure Gauge

11 reviews

SKU: AQUTTED

^$169.95

+ wishlist

In Stock

DESCRIPTION

A chrome-plated brass Tank to Tank Equalizer with Pressure Gauge for maximizing air availability and easy equalizing of cylinders.

Spare-Air 3000 Kit

10 reviews

SKU: SX27B

^$299.99

+ wishlist

In Stock

DESCRIPTION

A reliable and compact backup air supply kit for emergency out-of-air situations during diving, available in multiple sizes and colors.

Tusa SS-0002 Duo Air II Alternate Combo Inflator

10 reviews

SKU: TBTSS02

^$299

+ wishlist

In Stock

DESCRIPTION

A combination octopus regulator/power inflator with an air balanced power inflator valve and classic downstream regulator valve.

Cressi AC2/XS2 Regulator & XS2 Octo Package

9 reviews

SKU: PCKXS2

~~$344.90~~ Save: $94.90 (28%)

^$250

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In Stock

DESCRIPTION

A lightweight, high-performance regulator and octopus package with a non-balanced flow-by piston design.

XS Scuba Alt Air Octopus

8 reviews

SKU: XSSAAOBK

^$97.95

+ wishlist

In Stock

DESCRIPTION

A classic downstream demand valve octopus with an intelligent in-line mouthpiece and Miflex hose.

Mares LED Tank Module

8 reviews

SKU: MRSQT

~~$339.95~~ Save: $40.95 (12%)

^$299

+ wishlist

In Stock

DESCRIPTION

A Mares LED Tank Module with RF transmission, LED indicator for tank pressure, and streamlined dive profile.

Dive Rite XT2 Second Stage Regulator (No Hose)

7 reviews

SKU: DIVRG5200R

^$199

+ wishlist

In Stock

DESCRIPTION

A pneumatically balanced second stage with a carbon fiber cover and ABS plastic case.

Aqualung Airsource Complete

6 reviews

SKU: UDRAS3QD

^$279

+ wishlist

In Stock

DESCRIPTION

A pneumatically balanced octopus and BCD inflator combo with soft-touch purge cover and rapid-exhaust valve.

Scubapro MK25 EVO/A700 Dive Regulator System

6 reviews

SKU: SCPM25EA70

^$1299

+ wishlist

In Stock

DESCRIPTION

A high-performance regulator set with customizable breathing options and enhanced cold-water diving capabilities.

H2Odyssey Quick Release EAS Bag for 6-cu. ft. Tank

6 reviews

SKU: H2EASB6

~~$11.95~~ Save: $4.00 (33%)

^$7.95

+ wishlist

In Stock

DESCRIPTION

A durable nylon bag that securely holds a 6 cu ft cylinder for easy accessibility.

Highland by XS Scuba Silicone Regulator Necklace

6 reviews

SKU: XSSSRN10

^$22

+ wishlist

In Stock

DESCRIPTION

A silicone regulator necklace by Highland, designed for technical divers to keep their regulator close under the chin.

Blue Reef Cross-Over Equalizer

6 reviews

SKU: AQUTCED

~~$169.95~~ Save: $55.00 (32%)

^$114.95

+ wishlist

In Stock

DESCRIPTION

A blue tank accessory with chrome plated brass fittings that maximizes air availability and is equipped with bleeder valves.

Air Line Scuba Tank Regulator Hose Assembly

5 reviews

SKU: ALHHOS60

^$208

+ wishlist

In Stock

DESCRIPTION

A deck mount air supply alternative for scuba diving with solid-brass, nickel-plated fittings.

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Alternate Air Sources

Alternate air sources are a vital component of every diver’s safety setup, providing peace of mind and an extra layer of security beneath the surface. Whether you’re exploring vibrant reefs in warm, tropical waters or navigating the cooler depths of local lakes as the seasons shift, having a reliable backup breathing device is essential. Alternate air sources typically come in several forms, including the classic octopus—a brightly colored, secondary second-stage regulator attached to a longer hose for easy sharing—and integrated inflator designs that combine your BC’s power inflator with a backup regulator mouthpiece. For those who venture into more challenging environments or prefer solo diving, redundant air supplies like pony bottles or compact bailout cylinders offer an independent reserve of breathable air. Each type is designed to be quickly accessible and highly visible, often featuring yellow accents or purge covers to ensure your buddy can spot and deploy it in an emergency.

Selecting the right alternate air source involves considering your diving style, the environments you frequent, and your comfort level with various configurations. New divers often appreciate the simplicity and familiarity of a standard octopus, which mirrors the regulator used in training and is easy to locate and operate under stress. More experienced divers, or those who travel frequently, might opt for integrated inflators to streamline their gear and reduce hose clutter, though these systems require additional practice to master buoyancy and air-sharing techniques. Redundant air supplies, while bulkier, are a popular choice for technical divers or anyone planning deeper or more remote dives where buddy assistance might not be immediately available. These alternate air sources also make thoughtful, practical gifts for dive buddies, instructors, or loved ones building their own gear setups—especially as the diving season picks up and people look forward to new underwater adventures. Whichever style you choose, it’s important to pair your alternate air source with a secure and accessible mounting solution; you can find a range of options on our Alternate Air Source Holders page to suit every configuration and preference.

As you prepare for your next diving excursion—whether it’s a summer getaway to crystal-clear waters or a cool, early fall shore dive—don’t overlook the importance of regular maintenance and familiarization with your alternate air source. Practicing air-sharing drills with your dive buddy and ensuring your backup regulator or redundant air supply is properly serviced can make all the difference in an unexpected situation. Experienced divers often recall times when a well-placed octopus or an easily accessed pony bottle turned a potential emergency into a manageable, even routine, event. These moments underscore the value of investing in quality alternate air sources and integrating them seamlessly into your dive gear. By choosing the right setup for your needs and keeping it ready for action, you’ll not only enhance your own safety but contribute to a culture of preparedness and mutual support within the diving community.