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#691
Diving LP steel for the first time and have a question.
JeffNColdWater - 3/15/2017 5:12 PM
Category: Equipment
Replies: 7

I’m due for the first dive of the new year this weekend and my shop didn’t have the HP Steel 100s I usually dive with so I’ve got LP Steel 108s.

First question, I usually dive to about 900 PSI before ascending. Since I’m starting out at 2400 PSI should I adjust that number? It seems to me that it should use the same 900 PSI, but since I’m new to the tanks, I just want to confirm so I don’t leave too much air in the tank or even worse, risk not having enough for a safe ascent.

Second, these are much larger and seem heavier to me, should I be adjusting weighting?

And yes, I did ask the shop these questions and they did give me an answer, but I figured the collective knowledge of the Internet might give me a clearer answer. And to be honest, I’ve gotten bad or at the least, incomplete answers from pros in the past.

Thanks All
-J
#13154
LatitudeAdjustment - 3/15/2017 8:30 PM
" It seems to me that it should use the same 900 PSI, but since I’m new to the tanks, I just want to confirm so I don’t leave too much air in the tank or even worse, risk not having enough for a safe ascent. "

From what depth?
#691
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JeffNColdWater - 3/15/2017 8:34 PM
Good point. Never completely sure where the boat will go. It depends on conditions, but it will be between 40 and 80 feet. My usual depth off this boat is around 60.
#1791
ELLOCODIABLO - 3/15/2017 9:42 PM
To adjust for weighting you can look up scuba tank boyancy chart on goog and follow the link to Huron scuba. It has the diff in raw weights. You can compare the tanks and adjust accordingly
#507
#6116
Eric_R - 3/16/2017 3:23 PM
Some times the tank differences work in your favor. When I went out east last summer I rented a high pressure steel 80 and it was perfect for me in salt water. I didn’t have to add any weight to my normal aluminum 80 use setup for fresh water.
#453
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MrManta - 6/09/2017 8:07 PM
I just know from the start, z I will get a lot of flake from new divers on this, so here goes. Living aboard my Trimaran Manta, and diving the Sea of Cortez for over 35 years, I have found that a steel Lp95 works best. It is far easier on our compressor, and in the summer down here, wearing a lycra, and a shorty, I don’t have to wear a weight belt. The tank is 8.5 lbs neg, so it is like swimming naked. Winter diving is easy too, I simply put on my 10 lb. Rubber weight belt, with the 95 I am absolutely neutral between 20 ft, and about 200 ft, if you do that sort of dive. We have aluminum 80’s for guests, but that 4 lb.positive is a pain for most to deal with