Which scuba diving balloon to choose, FAQ

Iron Diving Air Tanks: Introduction and FAQ

Iron scuba diving air tanks (balloons) are a popular choice for divers due to their durability and affordability. They come in a variety of sizes and pressures, so it's important to choose the right cylinder for your needs. Balloons can be rented, which is easier than buying a balloon and taking care of it (perform diving balloon tests). Diving balloons are available for rent HERE.

Frequently asked questions and answers:

1. Do I need exactly 12l 200 bar or is a 12l 232 bar cylinder suitable, which is immediately in stock and can be delivered assembled?

It depends on your diving needs. The 12l 232 bar cylinder will allow you to breathe more air (384 liters more) and enjoy the diving process much longer. However, if you don't need longer dive times, a 12l 200 bar cylinder might be good enough. The 12l 232 bar cylinder is more durable and will last longer, but is slightly heavier (~2kg).

2. Why are 12l 232 bar cylinders chosen more often?

12l 232 bar cylinders are chosen more often because:

  • They can pump more air up to 230 BAR (384 liters more), (longer use)
  • Lasts longer because the material withstands more load
  • More resistant to falling, it has thicker walls

3. What are the disadvantages of 12l 232 bar cylinders?

12l 232 bar cylinders have some disadvantages:

  • They are slightly heavier than 12l 200 bar cylinders (~2kg)
  • They can be a bit more expensive (around 30 Eur)
  • They may not be as easy to find as 12l 200 bar cylinders

4. How to care for an iron underwater diving balloon?

It is important to take proper care of your iron scuba tank to ensure it lasts a long time. The balloon must be rinsed and dried after each dive. The cylinder should be checked by a technician regularly, once a year. See more here

5. Where can I buy an iron underwater diving balloon?

Iron underwater diving balloons can be purchased at the "DIVINGS" diving equipment store, in the balloons section. It is important to choose a reliable seller that offers quality balloons, view quality balloons, here.


Iron scuba tanks are a durable and affordable choice for divers. When choosing a balloon, it is important to consider your diving needs and budget.

Diving balloons and maintenance
Diving balloons and maintenance

Advantages of iron cylinders compared to aluminum cylinders


  • Iron cylinders are more resistant to impacts and scratches, which can extend their life.
  • Aluminum cylinders are more easily damaged if dropped or mishandled.

Service time:

  • Iron cylinders have a longer life than aluminum cylinders.
  • Aluminum cylinders can corrode, which shortens their service life.


  • Iron cylinders are heavier than aluminum cylinders.
  • However, the durability of iron cylinders can outweigh the lack of weight.

Gas volume:

  • Iron cylinders can have a larger gas volume than aluminum cylinders.
  • This means that you can dive longer with an iron balloon.

The price:

  • Iron cylinders are generally cheaper than aluminum cylinders.

In general, iron cylinders are stronger, last longer and are cheaper than aluminum cylinders. However, they are heavier.

When choosing a balloon, it is important to consider your needs and budget.

Note: It is important to note that iron cylinders have some disadvantages, which are weight and oxidation. They are not harder to come by than aluminum cylinders and their filling is similar.

Summary of Iron Underwater Diving Balloons:

  • Iron cylinders are more durable and last longer than aluminum cylinders.
  • Iron balloons can have a larger gas volume, allowing for longer dives.
  • Iron cylinders are generally cheaper than aluminum cylinders.
  • Iron cylinders are heavier and may be subject to oxidation in salt and wet environments.
  • When choosing a balloon, it is important to consider your diving needs and budget.

Iron scuba tanks are stronger, last longer, and are cheaper than aluminum, but heavier and more easily oxidized in an oxidizing environment, which is not seen in a normal dry environment. When choosing a balloon, consider your needs and budget.

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