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Re: Aquatic Plants Digest V3 #605

At 01:24 AM 10/27/98 -0500, Guang Yan Wang asked:
>Those anyone selling co2 equipments?


Price list  (all prices include shipping)

  CA customers add 7.5% tax (shown in parentheses)

  Regulator             $48 (3.60)
  Eheim reactor          26 (1.95)
   (includes check valve and bubble counter)
  Eheim adaptor           2  (.07)
  Silicone hose (10')     3  (.22)

  High pressure system  $70 (5.25) (includes all items above, just add CO2

Why we don't sell CO2 tanks:

CO2 tanks are heavy (60# for a full 20# tank) and therefore are
expensive to ship.  The shipping costs almost as much as the tank.
And they are considered hazardous materials because of the pressure
so they are even more costly to ship.  Better to get one locally.
That way you can also be sure your local guy will service it.

How to buy a CO2 tank.

There are two main sources of CO2 tanks:  welding supply companies
and beverage industry suppliers (for carbonation of soft drinks).
Generally, a tank costs about $50 for a 5# tank and $75 for a 20#
tank.  Some suppliers also rent tanks.  $1 per month is a frequent
figure.  You may decide it is more economical to rent.

CO2 comes generally from the same source as your tank.  A refill of
20# is about $15, 5# costs a little less.  You usually exchange your
tank when you refill.  For this reason, it is perfectly OK to start
with a used tank that has been checked out for safety by the seller.

A little CO2 goes a long way.  One pound of CO2 is about 60 gallons
of gas at room temperature and pressure.  That will supply most tanks
for about a month.  Two gallons a day is a heck of a lot of CO2.
Since I sell this stuff I have an obvious conflict of interest.

Dave Gomberg, San Francisco            mailto:gomberg at wcf_com