Should I get 4-HP80 or 2-HP120

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UaVaj

Contributor
Messages
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Location
SouthEast Florida
# of dives
I just don't log dives
In the past - I use to dive in the GOM in midwest florida where visibility was less than par and I spend alot of time on the bottom searching for fish to spear. Used up quite a bit of gas. Always used one tank per dive.

Now - I dive in the Atlantic in southeast florida where visiblity is great and most of the time I am in mid depth scanning and only go down to the bottom when I see a fish worth spearing. Most of time I can easily use a single HP120 for two full dive.

I currently own 4-HP120 (X7-120). Since I recently sold my other 2-HP149 (Faber). I am considering adding either 4-HP80 or 2-HP120 to my fleet.

If I was still in midwest florida. This be an easy decision. 2-HP120.
Since I am now in southeast florida. Even though I am still leaning toward 2-HP120. 4-HP80 might be a good alternative to consider.

What do you all think?
 
I don't dive any of those tanks, but have alway eyed the HP80s. they look like they are so easy to deal with (light & small)
 
...I currently own 4-HP120 (X7-120)...)

I am considering adding either 4-HP80 or 2-HP120 to my fleet.

... I am still leaning toward 2-HP120.

4-HP80 might be a good alternative to consider.

What do you all think?

HP 120s and HP 80s have very little in common with each other. It is hard to imagine why you would need an HP 120 if an HP 80s works for you??

If you are dwarfish in size but require a large tank, then HP 80s would make sense. However for most practical purposes HP 80s are too short, and therefore LP 85s would be a much better fitting tank.

And if that works for you, then the next logical step would be doubling the 85s into twin tanks. Twin LP 85s are still light enough to be used as beach tanks (as are also twin HP 80s or twin LP 72s).

So, I would suggest dumping the 120s and going with smaller doubles, if you really need that much air. This would then give you redundancy, and better trim.
 
Let me elaborate.

The HP120 are great.
(1) They allow me to do two full dive on one tank.
plus
(2) I have one less tank to bring for the trip.

Reason for considering HP80 is becuase it is suppose to be more streamline (smaller). Theoritically it should allow for me to swim that much faster to catch up to fish while hunting.
 
why not get LP120 and get 3 dives per tank?

seriously, the hp80s are too short, harder to get into my bc while siting on the cooler. i prefer the hp100s. i get 3 dives off 2 tanks, i whip the tanks after the first dive. i have hp119 also, same height as 100s but wider. i get all of thee tanks jacked to 3700. plenty of air ...get a transfill whip, priceless.

hopefully, you are using all DIN tanks and regs.

charlie:eyebrow:
 
If you are thinking of LP120 (like faber LP120) and overfilling them. No way. Not for me. I don't practice overfilling. If I reallie needed a tank that big. I pay the extra $50 and go with a HP149 (like faber HP149) tank instead.

BTW. As x-mas present. I did get a pair brand new faber HP149 (which are identical to LP120). Just didn't like the boyancy characterics at all. Only wet twice and it was up for sale.

Too bad worthington don't make any size in the 150cf category. That would be a serious consideration for me. Reason for leaning toward worthington is becuase of their boyancy characteristics.
 
i also have worthington steel HP130s, nice, which are rated for a 10% overfill. most steel tanks have similar bouyancy characteristics.

Pressure
(psi) Diameter Height WeightEmpty BouyancyFull : Empty

X7 Steel 65 3442 7.25 16.7 25.1 - 8.7 : - 3.9
X7 Steel 80 3442 7.25 19.7 28 - 9.0 : - 3.0
X7 Steel 100 3442 7.25 24.0 33 - 10.0 : - 2.5
X7 Steel 120 3442 7.25 28.0 38 - 11.0 : - 2.0
X8 Steel 119 3442 8.00 24.0 42 - 10.9 : - 2.0
X8 Steel 130 3442 8.00 25.5 43 - 11.7 : - 2.0
Comparison Only - Aluminum 80 3000 7.25 26.10 31.4 - 1.4 : + 4.4
 
https://www.shearwater.com/products/peregrine/

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