CO2 question - The Planted Tank Forum
 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 05-26-2013, 12:45 PM Thread Starter
Algae Grower
 
Join Date: Mar 2013
Location: Bloomington MN
Posts: 20
CO2 question

I run co2 when the light is on then turn it off as the light goes out. I also have the controller setup if the pH goes above 6.9 it will turn the co2 back on. is there an benefit to have co2 run 24/7?
thanks
clownnut is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 05-26-2013, 01:30 PM
Planted Tank Obsessed
 
WheeledGoat's Avatar
 
Join Date: Mar 2013
Location: Chicago
Posts: 324
you are set up correctly! plants do not use co2 when lights are off (no photosynthesis going on), so having it run could lead to buildup - enough to maybe be bad for fishies.

on the other side of the coin, neither are your plants making o2 at night (no photosynthesis). depending on how heavy the plant/fishie load is, some people run bubbles at night to ensure enough gas exchange.

i don't have a pH controller, but I believe most people use it the opposite way - to prevent co2 overdose (they have it set to turn OFF once pH gets too LOW). if your pH is getting too high, there is likely another cause and using co2 to lower it is only masking the real problem, as well as potentially gassing your fish.
WheeledGoat is offline  
post #3 of 7 (permalink) Old 05-26-2013, 02:06 PM Thread Starter
Algae Grower
 
Join Date: Mar 2013
Location: Bloomington MN
Posts: 20
using RO/DI water. always have issue with pH goes up.
ecocomplete is the sub and using Seiryu stone.
the apex keep the pH at 6.8-6.9. if too low, it will turn off, if too high, it will turn on.
don't seem have issue with the overdose on the co2 since I setup, I got a lot of fishs, but all small fish.
I still don't know the pH keep goes up. I do have an ATO that add RO/DI water into tank as it needed. the pH on my RO/DI water is 7-7.1 that might be what's bring it up, but I don't see how maybe 1/4 of cup of ro/di can bring up the pH on a 75G tank...
clownnut is offline  
post #4 of 7 (permalink) Old 05-26-2013, 02:53 PM
Planted Member
 
Join Date: Dec 2008
Location: USA
Posts: 161
I wouldn't run CO2 overnight. Your plants are doing that anyways.
agentkhiem is offline  
post #5 of 7 (permalink) Old 05-26-2013, 03:01 PM
Planted Tank Guru
 
HybridHerp's Avatar
 
Join Date: May 2012
Location: New York
Posts: 3,892
Yah, I have my co2 turn on half an hour before I have my lights come on, and my co2 off a half hour before my lights....I run airstones at night as well, but that's probably overkill. I already had them so I figured why not use them.

My 75 gallon High Tech Tank:http://tinyurl.com/n7zp47m
My 10 gallon High Tech Tank:http://tinyurl.com/qyf7s5o
My 5.5 gallon nano College Dorm Tank:http://tinyurl.com/p54uupj
Mom's Spec V:http://tinyurl.com/qjt3rw2
HybridHerp is offline  
post #6 of 7 (permalink) Old 05-26-2013, 03:47 PM Thread Starter
Algae Grower
 
Join Date: Mar 2013
Location: Bloomington MN
Posts: 20
Quote:
Originally Posted by agentkhiem View Post
I wouldn't run CO2 overnight. Your plants are doing that anyways.
i know, but i just dont want pH goes up and down too much.

i dont run the airstone, because i just dont want the pH to goes up at night.
clownnut is offline  
post #7 of 7 (permalink) Old 05-26-2013, 03:51 PM Thread Starter
Algae Grower
 
Join Date: Mar 2013
Location: Bloomington MN
Posts: 20
still need to find out why the pH keep goes up, i have use seachem acid buffer to keep it down. i setup dosing pump to dose acid buffer solution to keep it at 6.8-6.9 range. otherwise it will goes up to 7.6-7.8 range.
clownnut is offline  
Reply

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









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



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