CO2 Glossary? - The Planted Tank Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 17 (permalink) Old 12-31-2009, 09:25 PM Thread Starter
Guest
 
PTrader: (2/100%)
Join Date: Dec 2009
Posts: 58
CO2 Glossary?

Hi. Im so new to CO2 and the intricate aspects of aquatic plants that its not even funny. Is there a glossary somewhere or something where I can learn the terminology before jumping in here? Like, what does surface ripple have to do with it, different diffusing methods, mist vs dissolved, etc.

Thanks.

Ive got a 55 gallon, not much stock in it yet, but thats going to change soon. Ill be upgrading my lights to T5HO soon also, so Im likely going to need a crash course in CO2. I plan to go DIY with 2-liters of sugar water and yeast, and a 20-oz bottle for a separator. I understand the mechanics of how these will work, but not how to diffuse it properly or how many bottles I need for any given application.
Honky Magoo is offline  
Sponsored Links
Advertisement
 
post #2 of 17 (permalink) Old 12-31-2009, 11:45 PM
Planted Tank Obsessed
 
sajata's Avatar
 
PTrader: (3/100%)
Join Date: Aug 2009
Location: Chester Springs, PA
Posts: 305
add this to your list of things to read
http://www.greenleafaquariums.com/pl...aquarium-blog/


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
sajata is offline  
post #3 of 17 (permalink) Old 01-01-2010, 01:32 AM
smp
Planted Tank Obsessed
 
smp's Avatar
 
PTrader: (1/100%)
Join Date: Dec 2009
Location: Evans, West Virginia
Posts: 336
Regulator - Takes 900 psi C02 tank pressure to a "usable" lower pressure.
Solonid/Control Valve - Turns the lower pressure C02 On/Off. The solonid can be controlled by a timer or other device.
Needle Valve - Allows "fine tuning" and precise control of the low pressure C02.
Bubble Counter - Device that allows you to "see" the flow of low pressure C02
Reactor/Diffuser - Dissolves the C02 into the water. Reactors are normally outside the tank, diffusers are inside.
Drop Checker - Device inside the tank that contains a liquid which changes color based on C02 concentration.

Surface agitation - Causes an exchange of C02 and O2 to occur. Good for a stocked tank, not so good for a planted one (except when lights are off).

KH - Carbonate Hardness - a measure of the "alkalinity" of water.
PH - Measure of the acidity or alkalinity of water. 7 is "neutral". Below 7 is acidic, above 7 is alkaline.

There is a direct correlation of C02 concentration and KH-PH. (This is what the drop checker measures.)

I hope I got this right. If not, we'll correct it.

Steve

90 Gal, 4x65 CFL, 2 Eheim 2215, Pressurized C02
First attempt at planted
smp is offline  
 
post #4 of 17 (permalink) Old 01-01-2010, 01:38 AM Thread Starter
Guest
 
PTrader: (2/100%)
Join Date: Dec 2009
Posts: 58
Thanks, Steve. Ill definitely be going low tech. No pressurized tanks or solenoids for me. But the info about the KH/PH relations etc was very useful. I appreciate the help.

Is a diffuser essentially the same thing as the air diffuser for the air pump lines? What is a reactor? Will DIY CO2 be enough pressure to diffuse properly? Can I use DIY effectively on a 55 gallon tank with pretty high light levels?

As you can see, Im chock full o' questions.
Honky Magoo is offline  
post #5 of 17 (permalink) Old 01-01-2010, 03:16 AM
Planted Tank Obsessed
 
Nymsley's Avatar
 
PTrader: (7/100%)
Join Date: Mar 2009
Posts: 371
I have to ask why smp writes carbon dioxide with zeroes.

Quote:
Originally Posted by Honky Magoo View Post
Is a diffuser essentially the same thing as the air diffuser for the air pump lines?
Sort of. The idea is the same but most air stones produce larger bubbles than what we would like for CO2. Finer bubbles rise slower and will diffuse into the water better.

Quote:
Originally Posted by Honky Magoo View Post
What is a reactor?
The reactor is really the chamber in which the CO2 is mixed with the water. It can be inside or outside the tank. But some people use the same term to describe the bottle in which the yeast lives.

Quote:
Originally Posted by Honky Magoo View Post
Will DIY CO2 be enough pressure to diffuse properly?
Not sure what you mean here. If you mean does it produce enough pressure to work with glass/ceramic disk diffusers, you will find mixed results.


Heres a pressurized glossary with pics:
http://www.njagc.net/articles/co2.htm

The article lacks some of the newer trends like using a Hagen Mini Elite (HME) and needle wheels for diffusion but it covers a lot. You can find threads that cover the aforementioned methods in more detail.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
:
Nymsley is offline  
post #6 of 17 (permalink) Old 01-01-2010, 03:31 AM Thread Starter
Guest
 
PTrader: (2/100%)
Join Date: Dec 2009
Posts: 58
Nice, thanks, Nymsley. I guess the pressure question was about whether the slowly forming gas made by yeast (as opposed to a pressurized canister) would be sufficient to push through the check valve and the diffuser stone. But of course it would. Either that or the bottle explodes after a couple of days. So, yeah, never mind. lol.
Honky Magoo is offline  
post #7 of 17 (permalink) Old 01-01-2010, 03:37 AM
smp
Planted Tank Obsessed
 
smp's Avatar
 
PTrader: (1/100%)
Join Date: Dec 2009
Location: Evans, West Virginia
Posts: 336
A diffuser is "similar" but a little different. It has a ceramic disk the allows the CO2 to dissolve in the water, not really bubble though it. Here's one: http://www.drsfostersmith.com/produc...=0014036000000

A reactor is a device outside the tank that is normally plumbed into the output of a canister filter. CO2 bubbles enter the bottom, the water flows from top to button trying to push the bubbles down. As a result they dissolve in the flow. Here's one: http://www.drsfostersmith.com/produc...fm?pcatid=9918

Even though the CO2 fitting is on the top, there's an internal tube that runs to the bottom inside the reactor. This is reactor I have. (I'm running a pair of Eheim 2215 canister filters.)

You can also search the DIY here for diffusers and reactors people have made.

I personally don't think you will be able to properly regulate DIY CO2 in a 55 with high light. It would be "iffy" at best. Pressurized CO2 is not that "scary" or difficult. It's a small investment at first, but one that will last a long time. If you truly add up the costs of DIY (sugar/yeast/time), it doesn't take too terribly long to pay for a CO2 system.

Steve

90 Gal, 4x65 CFL, 2 Eheim 2215, Pressurized C02
First attempt at planted
smp is offline  
post #8 of 17 (permalink) Old 01-01-2010, 03:38 AM
smp
Planted Tank Obsessed
 
smp's Avatar
 
PTrader: (1/100%)
Join Date: Dec 2009
Location: Evans, West Virginia
Posts: 336
Quote:
Originally Posted by Nymsley View Post
I have to ask why smp writes carbon dioxide with zeroes.
'Cause he cnnt tuype toooo welll

Steve

90 Gal, 4x65 CFL, 2 Eheim 2215, Pressurized C02
First attempt at planted
smp is offline  
post #9 of 17 (permalink) Old 01-01-2010, 03:42 AM Thread Starter
Guest
 
PTrader: (2/100%)
Join Date: Dec 2009
Posts: 58
And do I need to point the diffuser at a powerhead or something, or does the normal tank circulation take care of spreading the gas around?

What kind of initial investment are we talking about for pressurized CO2? I think I have a source for a tank for free. Of course, I dont know what kind of tank I need for teh CO2...
Honky Magoo is offline  
post #10 of 17 (permalink) Old 01-01-2010, 04:31 AM
smp
Planted Tank Obsessed
 
smp's Avatar
 
PTrader: (1/100%)
Join Date: Dec 2009
Location: Evans, West Virginia
Posts: 336
Quote:
Originally Posted by Honky Magoo View Post
And do I need to point the diffuser at a powerhead or something, or does the normal tank circulation take care of spreading the gas around?
Normal tank circulation will do it

Quote:
Originally Posted by Honky Magoo View Post
What kind of initial investment are we talking about for pressurized CO2? I think I have a source for a tank for free. Of course, I dont know what kind of tank I need for teh CO2...

~$120+ if you have a tank. $120 will get you this (you have to add a diffuser)

$200 will get you this. (with bubble counter, no diffuser). (Or you can get the parts and DIY a setup).

You can go even higher.

For a tank, you MUST have one designed for CO2. Liquid CO2 is around 900 psi.

Steve

90 Gal, 4x65 CFL, 2 Eheim 2215, Pressurized C02
First attempt at planted
smp is offline  
post #11 of 17 (permalink) Old 01-01-2010, 04:41 AM Thread Starter
Guest
 
PTrader: (2/100%)
Join Date: Dec 2009
Posts: 58
Wow. Thats more than I was expecting. Well... Id like to do it, of course. I might just have to wait a little while to do it. Maybe the tank has some of this hardware already? If its already got a regulator, can I get just the other parts?
Honky Magoo is offline  
post #12 of 17 (permalink) Old 01-01-2010, 01:30 PM
smp
Planted Tank Obsessed
 
smp's Avatar
 
PTrader: (1/100%)
Join Date: Dec 2009
Location: Evans, West Virginia
Posts: 336
We need to know what type of tank and regulator you have. Yes, parts can be purchased, and if you are patient, you can find good deals.

Steve

90 Gal, 4x65 CFL, 2 Eheim 2215, Pressurized C02
First attempt at planted
smp is offline  
post #13 of 17 (permalink) Old 01-01-2010, 03:02 PM Thread Starter
Guest
 
PTrader: (2/100%)
Join Date: Dec 2009
Posts: 58
Ive asked my friend what size tank it is and he said its E size. Ive never heard of that before. Ill find out a soon as I can without bugging the crap out of him.
Honky Magoo is offline  
post #14 of 17 (permalink) Old 01-01-2010, 03:24 PM
Planted Tank Obsessed
 
Nymsley's Avatar
 
PTrader: (7/100%)
Join Date: Mar 2009
Posts: 371
E is 4" by 26" about 6 lbs of CO2. (Reference)

You should also ask your friend what type of valve it has. You'll want CGA 320.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
:
Nymsley is offline  
post #15 of 17 (permalink) Old 01-01-2010, 03:29 PM Thread Starter
Guest
 
PTrader: (2/100%)
Join Date: Dec 2009
Posts: 58
I believe he said something about the valve being H sized. And there is no regulator.. Ill give him a call in a while. I think he went out out 'celebrating' last night.
Honky Magoo is offline  
Reply

Tags
None

Quick Reply
Message:
Options

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

Password:


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

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

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