Is it necessary to turn off pressurized CO2 at night? - The Planted Tank Forum
 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 11-16-2015, 10:03 PM Thread Starter
Algae Grower
 
PTrader: (0/0%)
Join Date: Oct 2015
Posts: 31
Is it necessary to turn off pressurized CO2 at night?

I have a simple paintball system. It is challenging to keep levels consistent if I manually turn it off and on with the lighting. Can I just leave it on at night and let it go?
Andrea is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 11-16-2015, 10:15 PM
Planted Tank Guru
 
PTrader: (6/100%)
Join Date: Jul 2015
Location: US
Posts: 2,862
Depends on the amount of co2 you are injecting. For example, a lot of DIY doesnt have a "off switch" so it runs 24/7, but it is usually only putting a small amount of co2 compared to pressurized systems like your paintball (depending).

When the lights (photo period) are off, the plants are no longer photosythesizing, so they aren't using up the co2. So if the co2 is still being injected at night and nothing is using it, the levels of co2 can build up to dangerous levels and potentially kill all the livestock. It's also kind of a waste since some of the co2 being injected will be off gassed (happens all the time, but usually just the hours co2 is needed).

So it depends how much you are injecting if itis safe enough for fish to live through the night or not. UNLESS, you provide more surface agitation at night. What that really does is off gas the co2 so levels dont build up to dangerous levels, which again wastes co2.
WaterLife is offline  
post #3 of 5 (permalink) Old 11-16-2015, 10:19 PM
Planted Tank Enthusiast
 
randym's Avatar
 
PTrader: (0/0%)
Join Date: Sep 2015
Location: Northeast US
Posts: 651
You can.

Drawbacks: you might have to reduce the amount of CO2 if it runs 24/7. And you'll go through your CO2 faster - more of an issue with a small paintball system than with a 20-lb. tank.

Some people set up a powerhead that goes on when the lights go off (with a timer). The surface agitation helps make sure the fish aren't gassed overnight.

I leave my CO2 on all the time. I don't have extra surface agitation at night; I was just very careful when setting it up, making sure I was around to check on the fish when I first set it up.
randym is offline  
 
post #4 of 5 (permalink) Old 11-17-2015, 05:01 PM
Wannabe Guru
 
flight50's Avatar
 
PTrader: (5/100%)
Join Date: Apr 2012
Location: dfw
Posts: 1,402
I ran mine 24/7 a several years back with the Milkwaukee system at lower bps. Now that I have much better equipment, I do turn it of. For me, I wanted a constant pH level with is why I ran mine 24/7. Now, I turn it off to save co2 once I learned that once the lights go out, the plants don't use it anymore, they take in O2 instead.

Eheim Pimp #509
Finnex Club Member #31
The Fraternity of Dirt #146

Builds -
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.
flight50 is offline  
post #5 of 5 (permalink) Old 11-17-2015, 07:57 PM
Algae Grower
 
mootay's Avatar
 
PTrader: (0/0%)
Join Date: Feb 2015
Location: Seattle metro area
Posts: 144
It's generally thought that if the CO2 level isn't harmful to fauna during dark hours that it's being wasted. Do you have a regulator on your paintball rig? If so, you could buy a solenoid and connect it to your light timer.

-mootay
mootay 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