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I purchased a new deco cylinder with oxygen, analysed it and the device indicated 87%. The vendor swore, their oxygen was 99,9%. In fact, a reputable firm over here. My technician said, he did not trust the analyser, as the readings may be incorrect at this high content of oxygen. What should...

Hello, Has anyone tried to dry a Fusion Tech skin in a clothes dryer? Would it survive undamaged?

I must I install the shoulder dump valve on a Whites Fusion Tech, but I do not understand the design. Where must the skin material go? There is like a circle of a thin film-like material. Is it supposed to go into the groove as a seal or should it stay out? Thanks!

There are many videos on YouTube about how to use the Petrel DC. Not so many about Perdix. Would the wisdom of the Petrel videos apply to the Perdix, too?

Is DeepSeaSupply coming back or is it gone with the wind? Tobin?

My main interest in diving is caves. Alas, there are no submerged caves closer that 3000 km from my place and no natural environment where I could practise cave skills to keep them honed. Do you have any suggestions how to arrange a training field for cave divers in a quarry with a muddy bottom...

My new Perdix AI indicates 200 Bar. The SPG tells 210 Bar. How to know who’s right?

Hi, I have an Icon HD built in 2011. It is a model before "Net ready" and AI. Firmware version 2.02. In the "About Icon HD" section is a line "Upgraded". I have been told by other divers that I should update its firmware. On the Mares website "Downloads" I found V2.5. The picture suggests, it...

There is a quarry near Riga, the capital of Latvia, which is the training place for most of beginning divers. Depth 3-5m with submerged platforms and other stuff for learning. Average visibility is 5-7m. It is a plain and benign place, which often serves as a place for pool sessions. Last week...

I have not tried to sell any of my gear yet, but I obviously should. When you offer your items for sale, how do you estimate a reasonable and fair price to start with? Are there any guidelines or principles on the resale market? For instance, I have a used Mares Icon HD and a Aladin 2G computer...

In summer I got a new SMB with a blow tube. I deployed it in 15*C/59*F - no problem. I did it in 10/50 - so so... Today I tried it in 5/41 - no way! My lips were too numb to seal around the tube. Are there any tricks for that or must I get another SMB with a different inflation method? I don't...

I've got an Apeks Sidemount set which is 200 bar. Can it be transformed into 300 bar?

I got a primary reel with 500 feet of line on it. It seems too full and the line tends to slip over the edge. Those of you who have been in many caves - how much line do you keep on your reels? How far usually is the permanent line from open water in most caves?

Hi! I dive Whites Fusion Tech with MK0 base layer and Thermal Fusion undergarment. A good combination, but when the temperature comes close to 20C/68F, it gets too warm. I have also a fleece DUI streachLIner 100, but again - around these temperatures it feels too thin during longer dives. Could...

I have two questions about tanks: 1) Someone told me, it is not good to store cylinders fully pressurized for prolonged periods, as afterwards they may fail to pass the hydrostatic tests. Is that true? How serious? What would be then an acceptable pressure? 2) Why was I taught in the courses...

I have looked trhough several decompression planners and quite liked the Baltic Deco Planner. Some reviews pointed out, that its settings does not include a choice between fresh and salt water dives. How significant is it? Does fw and sw make a notable difference regarding decompression plans?

How does one plan and perform decompression in a cave, if the physical ceiling does not permit to follow planner's/computer's instructions?

Yeah, another equipment solution to a skills problem. Nevertheless, to what extent manoeuvrability and precision depends on the model (size, form) of the fins? Can anyone compare, let's say, Holiis F1 "Bat" fins and the Apeks RK3 fins from this perspective?

I quite like my Fusion Tech. However, the issue of the pocket flaps is generally known and acknowledged. It is very difficult to feel them in gloves. To open and to close the pockets is a problem, especially for sidemount divers. Has anyone succeeded to solve this problem?

Has anybody tried to mount a Sola Dive Light on a helmet? The shape of its body and the position of the switch makes the usual bungee method not very suitable. Any suggestions? Thanks!