How many CO2 bubbles per gallon of water? - Page 3 - DIY Aquarium Projects - Aquatic Plant Central

Go Back   Aquatic Plant Central > General Interest Forums > DIY Aquarium Projects

DIY Aquarium Projects For those that are handy or looking to save some money, discuss your DIY aquarium projects here.

Reply
 
LinkBack Thread Tools Display Modes
Old 03-19-2004, 07:30 AM   #21 (permalink)
 
Join Date: Jan 2004
Posts: 1,710
iTrader Ratings: 0
Sir_BlackhOle is a regular member
Default

Yes you need a test kit to measure KH, or you can ask your LFS to test your water and tell you what it is. I'm not too sure I would follow their advice about it being too hard.
Sir_BlackhOle is offline   Reply With Quote

Advertisement [Remove Advertisement]
Old 03-19-2004, 07:48 AM   #22 (permalink)
bms
 
Join Date: Feb 2004
Posts: 147
iTrader Ratings: 0
bms is a regular member
Default

Does KH stand for anything?, they tested it for Chlorine, Nitrate, Amonia, Hardness, and PH yesterday.
bms is offline   Reply With Quote
Old 03-19-2004, 08:23 AM   #23 (permalink)
 
Join Date: Jan 2004
Posts: 1,710
iTrader Ratings: 0
Sir_BlackhOle is a regular member
Default

There are two types of hardness, GH-general hardness, and KH-carbonate hardness. KH is what you want for determining how much CO2 you have. Get them to test your KH, they should be able to. Once you know your KH and pH you can use the chart to determine your CO2 content. I use Hagen test kits. They use color charts so you cant get it perfect, but I can get pretty close. They are pretty cheap too.
Sir_BlackhOle is offline   Reply With Quote
 
Old 03-21-2004, 05:59 AM   #24 (permalink)
bms
 
Join Date: Feb 2004
Posts: 147
iTrader Ratings: 0
bms is a regular member
Default Ph rising rather than lowering...

I do not have the test kit for KH yet, but my Ph is rising!! I measured it this morning (which supposedly since there is no light at night should be the lowest number of the day) at 7.2 (using color charts, aquarium farmaceuticals kit) what is happening!?
bms is offline   Reply With Quote
Old 03-21-2004, 06:10 AM   #25 (permalink)
 
Join Date: Jan 2004
Posts: 1,710
iTrader Ratings: 0
Sir_BlackhOle is a regular member
Default

Do you run your co2 at night? If not then your ph could rise overnight.
Sir_BlackhOle is offline   Reply With Quote
Old 03-21-2004, 06:13 AM   #26 (permalink)
bms
 
Join Date: Feb 2004
Posts: 147
iTrader Ratings: 0
bms is a regular member
Default

I left it running all night.
bms is offline   Reply With Quote
Old 03-21-2004, 06:45 AM   #27 (permalink)
 
Join Date: Mar 2004
Posts: 143
iTrader Ratings: 0
aquoi is a regular member
Default

I don't use bubble rates to set my CO2 to nice levels.
I maintain my KH at 4 and then increase CO2 steadily until I get a pH of 6.7 to get 24ppm of CO2.

You can maintain a good stable KH with additional calcareous filter media (coral chips, limestone, etc) or by adding CaCO3 every water change.

CO2 and lights are 10hours a day. At night I aerate the water for 14hours to provide O2 for the increased demand. Something I learned from some ADA publication.
aquoi is offline   Reply With Quote
Old 03-22-2004, 06:41 AM   #28 (permalink)
Senior Member
 
Join Date: Feb 2004
Location: USA
Posts: 739
iTrader Ratings: 1
iTrader Positive Rating: 100%
gpodio is a regular member
Default

If you do decide to airate your tank overnight, make sure you test your PH first thing in the morning prior to the turning off the air pump. In many tanks, plant uptake contributes to a small percentage of overall CO2 loss/consumption. Gas exchange actually accounts for most of the CO2 loss in a tank. Therefore, not everyone needs to aerate at night, actually for many, this would cause a bigger PH swing than leaving the CO2 running all the time.

Hope that helps
Giancarlo Podio
gpodio is offline   Reply With Quote
Old 03-22-2004, 07:04 AM   #29 (permalink)
 
Join Date: Mar 2004
Posts: 143
iTrader Ratings: 0
aquoi is a regular member
Default

My pH does swing but it doesn't affect my plant and fish health.
aquoi is offline   Reply With Quote
Old 03-22-2004, 07:42 AM   #30 (permalink)
bms
 
Join Date: Feb 2004
Posts: 147
iTrader Ratings: 0
bms is a regular member
Default

My tank woke up to a 6.7-6.8 ph at 7:00 this morning, right before turning on the lights.

Good thing you touched on the Ph swing subject as that was going to be my next question.

I have read a lot that fish do not like Ph swings, but how much is too much... unless you have aPh controller (and maybe even then) there will be Ph swings... photosintesis ocurrs at daytime only, hence my CO2 concentration is bound to be higher at night...

What is the general concensus on leaving CO2 on at night or not? Other than CO2 how can one reduce Ph swings to a minimmum or at least to a level when it will not affect fish?
bms is offline   Reply With Quote
Reply


Aquatic Plant Central > General Interest Forums > DIY Aquarium Projects > How many CO2 bubbles per gallon of water?

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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Aquatic Plant Forum Replies Last Post
soft, rain water questions Aqua5-0 Fertilizing 7 08-07-2005 03:32 AM
Post your local water quality IUnknown Fertilizing 9 12-31-2004 05:46 PM
Flourite changes water parameters Rolo General Aquarium Plants Discussions 2 08-20-2004 12:50 PM
Automatic Water Changing bobo Equipment 6 02-21-2004 05:31 AM
Substrate solution/water column interaction MiamiAG Substrates 5 02-08-2004 11:24 AM


All times are GMT -8. The time now is 02:39 AM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

Search Engine Friendly URLs by vBSEO 3.6.1