raising CO2 levels.... - The Planted Tank Forum
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 08-19-2005, 09:11 AM Thread Starter
The Weather's Here
 
toofazt's Avatar
 
PTrader: (41/100%)
Join Date: Jun 2005
Location: Bookings, OR
Posts: 1,251
raising CO2 levels....

I have a diy 2L co2 set up for my 20g. I'm at 7pH, 4kh, which puts my co2 at 10-12ppm. Say I was to raise my kh, would that increase the co2? Does 12ppm co2 sound right for a diy co2 on a 20g?
toofazt is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 08-19-2005, 12:20 PM
Wannabe Guru
 
Spar's Avatar
 
PTrader: (3/100%)
Join Date: Aug 2003
Location: Dallas
Posts: 1,018
KH has no impact on co2. So if you were to increase KH, you would have to find the equivalent cross section on the pH/KH/co2 chart where 10-12ppm co2 hits your new KH, and that should be your new pH.

I would think you could get a lot more than 12ppm from DIY on a 20g. What mix of sugar, yeast, water are you using?

Cliff
450g Planted Discus Tank - Work in Process!
Spar is offline  
post #3 of 9 (permalink) Old 08-19-2005, 03:10 PM
Guest
 
PTrader: (28/100%)
Join Date: Jul 2005
Posts: 1,984
With only one bottle, the peak of co2 for DIY in a 20g is pretty short. Also how are you diffusing the co2? that makes a big difference as well. 10-12 does not sound too off to me.

Oh yea, if you buffer up your KH, that does not only NOT increase co2, but also makes it hard to measure. I'd stay at 4 if I were U.
esarkipato is offline  
 
post #4 of 9 (permalink) Old 08-19-2005, 03:45 PM
Guest
 
PTrader: (0/0%)
Join Date: Nov 2003
Posts: 2,165
What Spar is saying is that if you just increase Kh, your pH is going to go up, and you'll still be at 12ppm of CO2. You need to think about adding another DIY bottle with a T connector.
I'd run 2 2L bottles, spaced a week or so apart, to get higher, more consistent co2 levels.
malkore is offline  
post #5 of 9 (permalink) Old 08-19-2005, 04:57 PM
Planted Tank Enthusiast
 
PTrader: (26/100%)
Join Date: Dec 2003
Location: Alachua, Fl
Posts: 680
I echo what everyone else is saying, you need a second diy system for your 20 gal. I had 2 when I did my 29 gal with diy. The only way to increase CO2 is to increase CO2 or have a more efficient reactor. A word of advice, FWIW, if you have around $120 you can spare and you want to save yourself time and hassles down the road, seriously think about pressurized.

Bert
Filstar pimp #19
Bert H is offline  
post #6 of 9 (permalink) Old 08-20-2005, 03:17 AM Thread Starter
The Weather's Here
 
toofazt's Avatar
 
PTrader: (41/100%)
Join Date: Jun 2005
Location: Bookings, OR
Posts: 1,251
Quote:
A word of advice, FWIW, if you have around $120 you can spare and you want to save yourself time and hassles down the road, seriously think about pressurized.
Where can I get a pressurized system for $120?
toofazt is offline  
post #7 of 9 (permalink) Old 08-20-2005, 03:37 AM
Algae Eater
 
bigstick120's Avatar
 
PTrader: (249/100%)
Join Date: May 2005
Location: Maryland
Posts: 3,182
i get 30 ppm CO2 with a 2 liter and a hagen ladder in my 20 gallon. It may be your difussion method. I had problems until I add the ladder


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.
bigstick120 is offline  
post #8 of 9 (permalink) Old 08-20-2005, 04:29 PM Thread Starter
The Weather's Here
 
toofazt's Avatar
 
PTrader: (41/100%)
Join Date: Jun 2005
Location: Bookings, OR
Posts: 1,251
Quote:
Originally Posted by bigstick120
i get 30 ppm CO2 with a 2 liter and a hagen ladder in my 20 gallon. It may be your difussion method. I had problems until I add the ladder
What's your mix for the CO2?
toofazt is offline  
post #9 of 9 (permalink) Old 08-22-2005, 04:12 PM
Planted Tank Enthusiast
 
PTrader: (26/100%)
Join Date: Dec 2003
Location: Alachua, Fl
Posts: 680
Quote:
Where can I get a pressurized system for $120?
$50 for a regulator. See here a Clippard needle valve will run you around $15-$20. At my fire extinguisher store, a used 5 lb CO2 cylinder filled runs around $50-$60. Add them up.

You can make a diy reactor very cheaply, and if you want a bubble counter (you can always put the tubing into a pre-determined spot into an empty glass container and count for your initial gas adjustment) one can also be made dirt cheap.

I have an all-inclusive regulator with built in needle valve, solenoid, etc and it has given me more problems than the kind of system I describe above where I put it all together myself. Three out of my 4 tanks run co2 24/7 - it's not a problem for me.

Bert
Filstar pimp #19
Bert H 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