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Be aware of 'techtrips'. Some are not and you have paid for something you don't get. Friends of me booked a tec liveaboard last november in Egypt. But the boat was not full and the owner decided to put recreational divers also on it. The technical divers were asking and asking again at least the...

The first question is: what is for example 10 minutes of omitted deco? it is a very big difference if you dive 100/100 buhlmann or 50/70 for example. If you just look to NDL tables, the DCIEM gives you only 15 minutes on air at 30m. But naui or padi tables for example give you 20 minutes of...

Last week we went diving in an old mine. It was a 250m way down to the water. And we dove with rebreathers and trimix, so it was a 4 times walk to get everything at the water. I was a little bit unlucky with a leaking neckseal, so my drysuit flooded suddenly at 65m depth. Because I could not...

I don't have that problem that you mention. I have 2 tecline 490 (really old and a new one), one bz400 from Santi, the thickest version from MolaMola and all the dump the same. Only with the MolaMola I need 1kg of weight more. I have used them with drysuits from Avatar, Santi, Otter and Procean...

but not in every country you can do all courses. It is not in my country. We don't have cave courses for cmas here, nor trimix courses. So also no instructors. But we have a specialty 'cave diving techniques in open water' for the ones that want to have 'cave' on their cert ;) We really only...

I am a 2* instructor for CMAS as well. Here is no 3* instructor. CMAS is still alive, it is still an agency like the others, but the structure is a little bit different. You have CMAS and in every country there can be only 1 officially licency. If there are more, they must get permit of the...

First, the 30 percent extra gas is just because of a 300 bar tank. That tanks also work with a normal bcd. Dramatically improved gas consumption. I use 10 to 12 liter per minute. How much is dramatically? Can I go to 8 liter? Or less? If I only go to 9.5 to 11.5, is is not dramatically...

It looks nice, but it is a big disadvantage that you cannot use all tanks. This will make it very expensive and not usable for everybody. If it is not that expensive, I would like to rent a tank and do a dive with it (I don't need a course for diving like this, this feels for me as money maker)...

I talked about 2008 documentation, there was not rec3 mentioned (Yes I own old course materials from several agencies, but also have new materials to see how things change over the years). Around 2012 I found that they had the T3 and C3, but there was no option to follow it. Seems you now can do...

No, in 2010 and 2011 you must put a Shearwater in bottomtime modus. So you was allowed to wear a computer, but not using it. In that time, trimix computers were not that common as they are nowadays. I did not have one, I bought my first one end of 2012. You had the very old VR3 computers...

ITT/Fundies, etc are not technical courses. But if you do them too early, you will not be satisfied probably. Is it too early to think about tec? No. You can think about it. I already did during my open water course, I knew I want to become a technical diver. If you go with 'begin with the end...

So as said, the chimney must smoke. Money must be earned. If courses are not sold anymore, you must look at other options. And if you don't want to dive deep air, you must introduce a way to hold students with you, otherwise you will miss the boat. A waiver for the experience dives is in my...

Is it a papa or a patata in Spanish?

And if you also clean the valve of the cylinder, AP diving has the normal NBR Oring in their oxygencompatible kit to be used between valve and cylinder. Sometimes it is a discussion here that viton must be used, but viton is only in 85 shore available and for high pressure you need 90 shore...

A few years ago, ccr diving was no gue diving at all. A few years ago, sidemount diving was no gue diving at all. So they changed like others also do. In 2010-2012, a computer was forbidden with gue, you did all deco by head. Ratio deco. Now a computer is allowed. So here they changed also. DIR...

There are divers with a gue cert moving to a kiss mCCR unit. So it would not be strange to add an mCCR to the curriculum. It is like with every agency, the chimney must smoke, money must be earned. So if there is an ask for it, there will be a course made. Maybe it will take a while, but it...

You really don't need 4000 lumens. I have several lights, and a lot of them I never use on the brightest option. I have a 10 watt yellowdiving. That is enough for in caves. I friend has the 20 watt, that is too wide often. I also have an IwaveOcean, a brand that has been dissappeared as soon...

They must be more or less the same, around 9.5 bar. But if you don't know what you are doing, please ask someone who knows how it works. Servicing regs is not hard, I do also myself, but I did a course for it. In my country there are sometimes courses for it, given by diveshops. It are not the...

I think we use another defnition for 'oversaturation or supersaturation'. If we have the tissues loaded till ambient pressure, we have 'saturation'. If we ascend, we get oversaturation, that is how I would call it. I would speak about supersaturation if you go over the theoretically M-value...

There is only one way not to get bent and that is don't dive. With every ascend, how slow it is, there must be some oversaturation, otherwise you cannot loose the gas from your tissues. The tissueloading must get a new equilibrium. If you stay at a certain ambient pressure, you will not loose...