How you ID your Deco tanks

[DevonDiver]

MOD is critical.

Mix % is just a sanity check.

I put MOD and mix on the tank neck. The MOD is biggest. I also put the MOD in very big numbers on the side of the tank.

The WKPP standard is the model to follow, but when staging tanks, I prefer to put my name on the bottom of the tank also... which probably reflects a difference between wreck and cave staging procedures.

I also mark the regulator 2nd stages of deco/stage tanks.

 

[tbone1004]

So me being metric is it OK to put a number and a "M" behind it, for example 21m or 9m, or is it because this metric issue that they put the OXY-80 on it ?

you can if you dive in mixed teams, but if the team is metric then I don't see a need to

 

[PfcAJ]

So me being metric is it OK to put a number and a "M" behind it, for example 21m or 9m, or is it because this metric issue that they put the OXY-80 on it ?

What exactly is "oxy-80"?

Is 80 the MOD? The gas %? Then why put "oxy" after if its it's not oxygen?

Does "m" add any value?

 

[PfcAJ]

MOD is critical.

Mix % is just a sanity check.

I put MOD and mix on the tank neck. The MOD is biggest. I also put the MOD in very big numbers on the side of the tank.

The WKPP standard is the model to follow, but when staging tanks, I prefer to put my name on the bottom of the tank also... which probably reflects a difference between wreck and cave staging procedures.

I also mark the regulator 2nd stages of deco/stage tanks.

I put my name on the tanks too. That's normal.

 

[DevonDiver]

you can if you dive in mixed teams, but if the team is metric then I don't see a need to

Here in the Philippines we get a mixture of metric and imperial divers.

For that reason I mark as per '6m' or '21m'

Whilst the MOD depths are quite obviously metric or imperial, at standard depths, its a small effort to eliminate any chance of confusion.

 

[Remy B.]

MOD is critical.

Mix % is just a sanity check.

I put MOD and mix on the tank neck. The MOD is biggest. I also put the MOD in very big numbers on the side of the tank.

The WKPP standard is the model to follow, but when staging tanks, I prefer to put my name on the bottom of the tank also... which probably reflects a difference between wreck and cave staging procedures.

I also mark the regulator 2nd stages of deco/stage tanks.

Putting a tag on the second stage is what my instructor recommends as you don't have very good view of the side of the tank.

My tanks have my name on the lower part of the tank

I find a valid point to put bigger letters on the neck of the tank with the MOD, because that is the first part of the tank your eyes see.

I find the small stickers with all the info on it kind of useless as your buddy that shall confirm your switch can't read them.

As for putting the % of O2 on it, I guess it can be a option but I rather just to put the MOD in big letters.

I guess the 9 requires a "m" after it so it doesn't look like a six and avoid confusion

 

[RainPilot]

Tags come off, or worse you might have a brain fart and switch regs when assembling. the tags I think are very much a last step sanity check, I wouldn't trust my life to them.

There should be no reason to refer to the analysis tape during the dive, the MOD is all you care about at that stage. Misreading a 50% for a 50 MOD in meters will be a very costly mistake as well.

The 9 vs "9m" is valid, I suspect that 6 (m) vs 9 (m) would be a more likely mistake with 100%.

This is one of the areas where standard gases have a benefit, it allows tanks to be marked with a permanent MOD in big letters everywhere. I have dedicated 50% and 100% tanks that are permanently marked and never have anything else in them.

 

[kensuf]

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[kensuf]

Oxygen needs to say "OXYGEN" on it so it doesn't get confused with 120. The rest can just be MOD labels.

 

[tbone1004]

@RainPilot if following the normal conventions for MOD, the 80% bottle should have 10m on it, not 9m.

@Remy B. the big stickers on the side are for the quick validation when you pick it up if you have dropped it off in a cave, but more importantly they are for your buddy to be able to make sure you aren't grabbing the wrong bottle if you are narc'd or being an idiot during the gas switching procedure.

I just use standard tape for analysis tape and put big ass MOD numbers in bold, and then the analysis numbers are done in a fine point pen in small print.

I don't believe in using 80% as a deco gas, if you need to stay out of the MOD of 100% O2, then stay on a 50/50 bottle so you have more depth freedom from surge etc.