The Planted Tank Forum - Reply to Topic
Thread: Comprehensive DIY C02 Index - Recipes, reactors, & more Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
07-25-2006 02:40 AM
CO2 bottle pressure in relation to room temperatures

In response to a question about the internal pressure in a CO2 bottle at a given room temperature, one of our members, MADMAN280 posted this useful information:

Originally Posted by madman280
When a CO2 tank is reasonably full it will contain a mixture
of both CO2 liquid and vapor.

As long as both liquid and vapor are present,
the pressure in the (CO2) tank will depend only on the (ambient) room temperature (not "fullness")
as shown in the table below:

Tank Temperature Cylinder Pressure
(F) (PSIA)
@69 837
@71 859
@75 905
@77 928
@79 952
@81 976
@89 1080

The gauge pressure (PSIG) is approximately 14.7 psi less than the values in the table above. The temperature to pressure relationship is logarithmic. Thats why its not a good idea to leave a full cylinder in your trunk on a hot day.
Thanks MADMAN280!!

12-01-2005 09:11 PM
Comprehensive DIY C02 Index - Recipes, reactors, & more

Here's a collection of DIY CO2 articles that include directions
for making various reactors, yeast recipes, and CO2 bottles units.

DIY CO2 References - Understanding the Basics of DIY CO2 diffusion with how to guides

Comprehensive DIY CO2 Report - reasons for CO2, DIY bottles, yeast recipes, and diffusors w/pics
DIY CO2 Article - illustrates how to make DIY CO2 bottles, and yeast recipes w/pics

CO2 Reactors and Diffusors - methods of dissolving and dispersing CO2
Hagen Nutrafin Ladder - one of the best CO2 diffusors
CO2 Diffusion - using the "bell", filter and powerhead intakes, external reactors, glass diffusors

External Reactors - are hooked inline to a canister filter to dissolve CO2 bubbles against water flow
Aquamedic 1000 - Commercial External Reactor
Gomer Reactor - DIY version of Aquamedic 1000 External reactor
Rex Reactor - DIY version of Aquamedic 1000 External reactor
Hoftiezer Reactor - external reactor using clear PVC from
Inline CO2 Reactor - DIY version External Reactor

CO2 Yeast Recipes
Hagen Nutrafin Recipes - yeast recipe to fill Hagen canister unit
Nyberg's Yeast Method - addition of soy powder to enhance CO2 production
Jello Recipe - use of jello to prolong CO2 production

Posting Rules  
You may not post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

For the best viewing experience please update your browser to Google Chrome