Go Back   Aquarium Advice - Aquarium Forum Community > Freshwater > Freshwater & Brackish - Planted Tanks
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 04-24-2007, 03:59 PM   #1
Aquarium Advice Addict
 
PrettyFishies's Avatar
 
Join Date: Mar 2003
Location: Durham, NC
Posts: 1,689
Ideal Co2 Concentration

Hello all,

I have a 20 gal tank with the following:

KH 4.5
PH 6.8
GH 15

Co2 - 22 ppm
http://www.csd.net/~cgadd/aqua/art_plant_co2chart.htm

QUESTION:

What's the ideal concentration? That page says 10-25 and that 25 ppm can be harmful to fish. I've seen 30 ppm as a reccomendation. Thoughts from experience?
__________________

__________________
125 gal mixed REEF
PrettyFishies is offline   Reply With Quote
Old 04-24-2007, 04:56 PM   #2
Moderator Emeritus
 
Purrbox's Avatar
 
Join Date: Jun 2005
Location: Iowa USA
Posts: 5,860
That page has a much more conservative recommendations than commonly found now. Now you'll most often find that 30ppm is the recommended target. It's also been determined that CO2 doesn't become harmful to fish until the concentration gets above 100ppm.
__________________

Purrbox is offline   Reply With Quote
Old 04-24-2007, 05:08 PM   #3
Aquarium Advice Addict
 
PrettyFishies's Avatar
 
Join Date: Mar 2003
Location: Durham, NC
Posts: 1,689
What's the REAL difference between 25 and 30ppm from the plant's perspective? Do different plants need different concentrations?
__________________
125 gal mixed REEF
PrettyFishies is offline   Reply With Quote
Old 04-24-2007, 06:36 PM   #4
Aquarium Advice Freak
 
Join Date: Apr 2005
Location: Memphis,Tn US
Posts: 447
Like almost everything else in this part of the hobby, there are many schools of thought. Some say AT LEAST 30ppm, some say AT MOST 30ppm. In reality it's very unlikely you'll have 30ppm at the point your calculations show it to be. Personally, I tend to err to the high side of the scale. It won't hurt to have 45ppm but plants won't benefit. Your fish won't suffer in the least.

To directly answer your question it's a common notion that 30ppm is the highest level of CO2 plants can benefit from. Someone else may know of a particular specie that can use higher levels but it will likely be a "weed" that uses it to take over your tank.
__________________
Hoovercat is offline   Reply With Quote
Old 04-24-2007, 10:13 PM   #5
Moderator Emeritus
 
Purrbox's Avatar
 
Join Date: Jun 2005
Location: Iowa USA
Posts: 5,860
Actually the main difference has to do with algae and not the plants. You are less likely to run into problems with BBA for example if you CO2 levels are at or above 30ppm.
Purrbox is offline   Reply With Quote
Reply

Tags
co2

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Ideal Measurements jameswillers Saltwater & Reef - Getting Started 4 09-27-2007 08:47 AM
What's the ideal temp as you see it? myles Freshwater & Brackish - General Discussion 4 11-12-2006 06:35 AM
Ideal Temprature? J-Aqua Cichlid Discussion 9 11-09-2006 01:52 PM
Ideal SG ? Charlie Saltwater & Reef - Getting Started 8 07-28-2006 02:21 PM
CO2 concentration: pH vs. KH Milan Freshwater & Brackish - Planted Tanks 7 09-28-2005 10:44 AM







» Photo Contest Winners







All times are GMT -4. The time now is 09:05 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.