CO2 - Reuse 2 liter bottles? - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 02-16-2013, 09:00 PM Thread Starter
Planted Tank Enthusiast
Join Date: Jan 2013
Location: Reading, Pennsylvania
Posts: 859
CO2 - Reuse 2 liter bottles?

Hi all,

Im in the process of setting up my first diy co2 system for my 20 gallon tank, so far im thinking of using two 2 liter soda bottles with a bubble counter which is going to be a vitamin water bottle or something similiar to that.

My only question is can you reuse the same soda bottles time after time, for the sake of not having to reseal the caps every time you need to redo your recipe.


TECKSPEED is offline  
Sponsored Links
post #2 of 7 (permalink) Old 02-16-2013, 09:27 PM
Algae Grower
Join Date: Jan 2013
Location: US
Posts: 92
Yes, but i would recommend you getting atleast one extra bottle because you can prepare your next mixture before the first one run out. When it run out, you have a bottle ready to go and producing CO2. Thats what iam doing right now for my 46g bowfront. Though i only use one 2 litre bottle.
plantedtankfan is offline  
post #3 of 7 (permalink) Old 02-16-2013, 10:24 PM
Darkblade48's Avatar
Join Date: Jan 2008
Location: Toronto/Singapore
Posts: 10,598
Yes, you can reuse the bottles.

As mentioned, having multiple bottles so you can stagger you mixtures will provide a more continuous CO2 supply, and is recommended.


A Primer to Pressurized CO2 and A Primer to Planted Tanks
Eheim Pimp #362 - Eheim 2213 x2, Eheim 2028, Eheim 2217, Eheim surface skimmer and Eheim autofeeder.
Victor Pimp #33 - HPT272-125-350-4M
Darkblade48 is online now  
post #4 of 7 (permalink) Old 02-16-2013, 11:42 PM
Wannabe Guru
aluka's Avatar
Join Date: Feb 2013
Location: Boston, MA
Posts: 1,508
for a 20 gallon, i think 2 bottles is good. So you should have 4 bottles handy, 2 bottles attached, and 2 bottles ready with the new mixture.

But yes, you can reuse the bottles, just rinse with water till its clean and remake the mixture. It takes about 30 minutes to 2 hours before it starts producing co2, which is why you should have 4 bottles handy, so when you are about to switch them off, you can make the mixture early in the 2 spare bottles =)
aluka is offline  
post #5 of 7 (permalink) Old 02-17-2013, 01:31 AM
Planted Tank Guru
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 21,015
An easier way to refill the bottles is to always do it at night, after the tank lights are off. The plants don't need CO2 at night, so your new bottle has at least 12 hours to come up to producing good CO2 before it is needed.

Hoppy is offline  
post #6 of 7 (permalink) Old 02-17-2013, 06:51 PM Thread Starter
Planted Tank Enthusiast
Join Date: Jan 2013
Location: Reading, Pennsylvania
Posts: 859
CO2 - Reuse 2 liter bottles?

Thanks guys for all of your input its appreciated
TECKSPEED is offline  
post #7 of 7 (permalink) Old 03-07-2013, 02:05 AM
Planted Member
Join Date: Feb 2006
Location: ridgecrest,ca
Posts: 194
Sealing caps

One different approach is to get rubber stoppers from the hardware store, drill them to accept rigid Irline tubing, and then attach the airline to the stub through the plug.

Much easier than trying to seal a cap with silicone.
frog111 is offline  

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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