eelnoraa
Contributor
If you want/need certain tanks that you can't rent, then it is a no brainer. It is not even about economical.
If you are happy with your rent selection, then you need to dive regularly make up the cost of the tank. There are three components of owning your own tanks: 1)one time purchase. 2)on going maintanance, hydro and viz. 3)air fill. You need to beat 2) and 3) to make economical sense.
In my area, AL80 rental is $6/day. Air fill is $3. So you save $3/dive. If you make 2 dives/dive day, you save $6/dive day if you have two tanks. Hydro is $50/5year, Viz is $10/yr. So on going cost of owning two tanks is $200/5year ($200/260weeks). Since you save $6/dive day, you need to dive 33 days in 260 weeks. That is about 1 day (2 dives) of diving per 2 monthes. Not a lot, but this is need to break even with 2) and 3) above in my area.
---------- Post added May 31st, 2013 at 11:18 PM ----------
I think we agree with each other, but this thing seems to be location dependent too.
If you are happy with your rent selection, then you need to dive regularly make up the cost of the tank. There are three components of owning your own tanks: 1)one time purchase. 2)on going maintanance, hydro and viz. 3)air fill. You need to beat 2) and 3) to make economical sense.
In my area, AL80 rental is $6/day. Air fill is $3. So you save $3/dive. If you make 2 dives/dive day, you save $6/dive day if you have two tanks. Hydro is $50/5year, Viz is $10/yr. So on going cost of owning two tanks is $200/5year ($200/260weeks). Since you save $6/dive day, you need to dive 33 days in 260 weeks. That is about 1 day (2 dives) of diving per 2 monthes. Not a lot, but this is need to break even with 2) and 3) above in my area.
---------- Post added May 31st, 2013 at 11:18 PM ----------
I think we agree with each other, but this thing seems to be location dependent too.
The cost of a scuba tank is calculated like that of a car. You don't worry about what it cost, you worry about how much it'll depreciate.
For example, lets say I buy a used LP95 for $150. Over 5 years I pay $20 for hydro and $100 for VIPs ( really $75 since the other $25 are provided fills ). Finally I sell the tank for $125. My cost over 5 years was $25 in depreciation and $95 in maintenance. That's $120. If I can get a fill for $2 cheaper then a rental that's 60 dives over 5 years that I have to make to break even.
That's only 1 dive a month to break even.
Let's say you buy 2 tanks so you can do 2 dives in one day. That's 2 dives per month.
If you can't average 2 local dives per month, well, you aren't a diver IMO.