PH CO2 Question
Planted Tank Forums
Your Tanks Image Hosting *Tank Tracker * Plant Profiles Fish Profiles Planted Tank Guide Photo Gallery Articles

Go Back   The Planted Tank Forum > Specific Aspects of a Planted Tank > Fertilizers and Water Parameters


Reply
 
Thread Tools Display Modes
Old 05-07-2012, 04:34 PM   #1
Dmckmc
Planted Member
 
PTrader: (0/0%)
Join Date: Jan 2012
Location: Baltimore, MD
Posts: 237
Default

PH CO2 Question


Does CO2 change ph? I've never really understood this relationship.

Thanks.
__________________
*60g
*Substrate = 50% Florite sand 50% regular Florite
*Lighting 108W of a 216W T5HO Aquatic Life hood 25" from substrate 8.5 hours daily.
*Amarath Redroot, Waterhyssop, Brazilian Pennywort, Water Wisteria, Jungle Val, Moss Ball, Riccia, Nana, Java Lace, Cryptocoryne, Pigmy Chain Sword.
Dmckmc is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 05-07-2012, 04:41 PM   #2
Hoppy
Planted Tank Guru
 
Hoppy's Avatar
 
PTrader: (74/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 18,794
Default

CO2 dissolves in water, with a portion of it chemically forming carbonic acid. That portion is a function of the KH of the water. Carbonic acid lowers the pH of the water. Turn off the CO2, and the carbonic acid converts back to CO2, and the pH rises.
__________________
Hoppy
Hoppy is online now   Reply With Quote
Old 05-07-2012, 11:55 PM   #3
Dmckmc
Planted Member
 
PTrader: (0/0%)
Join Date: Jan 2012
Location: Baltimore, MD
Posts: 237
Default

Thanks Hoppy. So, if I want to try my hand at keeping shrimp or a certain fish that is sensitive to Ph, how do I keep the ph stable if I turn my co2 off at night?
__________________
*60g
*Substrate = 50% Florite sand 50% regular Florite
*Lighting 108W of a 216W T5HO Aquatic Life hood 25" from substrate 8.5 hours daily.
*Amarath Redroot, Waterhyssop, Brazilian Pennywort, Water Wisteria, Jungle Val, Moss Ball, Riccia, Nana, Java Lace, Cryptocoryne, Pigmy Chain Sword.
Dmckmc is offline   Reply With Quote
Old 05-11-2012, 02:08 AM   #4
Dmckmc
Planted Member
 
PTrader: (0/0%)
Join Date: Jan 2012
Location: Baltimore, MD
Posts: 237
Default

Bump anyone?

Thks.
__________________
*60g
*Substrate = 50% Florite sand 50% regular Florite
*Lighting 108W of a 216W T5HO Aquatic Life hood 25" from substrate 8.5 hours daily.
*Amarath Redroot, Waterhyssop, Brazilian Pennywort, Water Wisteria, Jungle Val, Moss Ball, Riccia, Nana, Java Lace, Cryptocoryne, Pigmy Chain Sword.
Dmckmc is offline   Reply With Quote
Old 05-11-2012, 02:52 AM   #5
Diana
Planted Tank Guru
 
PTrader: (0/0%)
Join Date: Jan 2010
Location: Contra Costa CA
Posts: 7,504
Default

Fish do not care about the pH changes that happen when you run CO2.

Fish care about the mineral content of the water.
Set the GH to optimum for the fish.
Make the KH more or less similar to the GH (within 2 German degrees of hardness is near enough)
Allow the pH to do what it will and see what happens.
Some fish from black water biotopes will benefit from peat moss added to the filter.
Diana is offline   Reply With Quote
Old 05-12-2012, 02:53 AM   #6
Dmckmc
Planted Member
 
PTrader: (0/0%)
Join Date: Jan 2012
Location: Baltimore, MD
Posts: 237
Default

Quote:
Originally Posted by Diana View Post
Fish do not care about the pH changes that happen when you run CO2.

Fish care about the mineral content of the water.
Set the GH to optimum for the fish.
Make the KH more or less similar to the GH (within 2 German degrees of hardness is near enough)
Allow the pH to do what it will and see what happens.
Some fish from black water biotopes will benefit from peat moss added to the filter.
Thanks. I was thinking about trying shrimp and thought stable ph was necessary?
__________________
*60g
*Substrate = 50% Florite sand 50% regular Florite
*Lighting 108W of a 216W T5HO Aquatic Life hood 25" from substrate 8.5 hours daily.
*Amarath Redroot, Waterhyssop, Brazilian Pennywort, Water Wisteria, Jungle Val, Moss Ball, Riccia, Nana, Java Lace, Cryptocoryne, Pigmy Chain Sword.
Dmckmc is offline   Reply With Quote
Reply

Thread Tools
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

Forum Jump


All times are GMT. The time now is 07:03 AM.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright Planted Tank LLC 2012