Lost while picking tanks...

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What is your height ? If you are 6'2 or taller 120 might work better for you. If you are shorter 100 might be better , its a nice tank. They them both and see which one is better

If you want the gas of the 120 but prefer a stouter cylinder get the 119. It's shorter and 8 inches in diameter.

Pete
 
Another possible issue is that many dive boats are only set up to accommodate 7.25" diameter tanks, which could be a problem with the 119's since they are 8".
 
Are you found yet?
 
I'm looking to upgrade to 100's or 120's. Not sure what to pick. I plan on diving in the Ft. Lauderdale area doing wrecks off of boats and plenty of beach diving (plan on single tank dives without deco).
For SINGLE TANK diving, you may want to add the HP130 to your list of possibilities (along with LP tanks, and the HP119s, already mentioned). I have 100s, 120s and 130s, and prefer the 130 as a single tank, simply because it gives me the most gas (I prefer to run out of NDL before gas), and is a little shorter than my 120, without a noticeable difference in weight (it is heavier but I don't really notice it). As noted, you will get full fills on HP tanks in the FTL area, and Dive Fill Express is a good recommendation. For twin tank diving, I prefer double 100s, in terms of buoyancy and trim, and weight.
 
really liking the 119's idea... plenty of gas, no too big.
 
Mine are what I call 120s, Roth, normal pressure, 8in x 28in, 44lbs. Rocks sand tracks ugly heavy lump on your back is no big deal. The extra time you get will blow your mind.
 
My buddy and I went through the same process. After diving 120's (he bought 2 used ones) we had plenty of gas left when the computer said "time to go". Too much, really. 80's were not emough gas. In South and Central FL the 100's give us a comfortable reserve of gas when the computers say "up".

Greg sold those 120's for more than he paid. They were like a phone pole on the back. We like the 100's as an easy to handle size.
 
I'll add one more thing to the equation. The HP120 tanks are tall. When you have to transport them, they're tall enough that when you carry them, you'll need to have your arm at a funky angle to keep them from dragging on the ground (unless you're 6'8" tall or something, or have midget short arms). Moving them anything more than fifty feet and it gets annoying. I have one that I use for So Cal boat diving (mainly because of the short fills and sometimes wet fills on the boats) and that is my biggest complaint. Underwater I don't notice the length at all (I'm 5'10" tall).

Stick with the aforementioned HP100's. Practically the same size as an AL80. The 8" tanks (LP95, LP108, HP119, HP130) are big enough that they don't fit in standard tank holders on the boat.
 
Also in Florida, some shops will fill them to 3000 psi so you get more cubic feet of air.

Florida overfills are still around, but leaving the scene. "We don't do that anymore" is heard regularly. You might be sorry if you buy an LP in anticipation of getting it overfilled everywhere you go. You won't be sad if you buy it for what it is, an LP.

Have fun with it.
 

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