eheim 2213 + eheim diffuser + co2 - Tropical Fish Keeping - Aquarium fish care and resources
LinkBack Thread Tools
post #1 of 2 Old 05-31-2013, 05:26 PM Thread Starter
eheim 2213 + eheim diffuser + co2

Would the co2 diffuse properly if I plug my co2 exhaust into the air input on my diffuser.
slojko is offline  
Sponsored Links
post #2 of 2 Old 05-31-2013, 10:15 PM
DKRST's Avatar
The short answer is....sort of.

The CO2 will probably diffuse quite well through your diffuser. The biggest issue is the location of the diffuser outflow.
If it's near the surface, all those CO2 bubbles will move to the surface quickly, resulting in a waste of CO2 and poor
distribution down into your tank. Ideally, you want the CO2 bubbling/diffusing near the substrate to provide the
maximum amount of contact time for the CO2 to diffuse into the water column. A CO2-specific diffuser will give you
much finer bubbles than an airstone or your diffuser, increasing CO2 diffusion into the water.

The next issue is current flow. You want a good bit of current in the tank to distribute the CO2. I've had my best
luck in a tank using CO2 with an absurdly high amount of water circulation (there were no fish in the tank, so a strong
current wasn't an issue). However, if you have too much surface disturbance, then you off-gas the CO2, lowering the
water concentration of CO2.

It's a balance. Take your time and see what works for you. Don't rush it and don't gas your fish. Make small change
in the CO2, leave it alone for a couple of days and watch the fish. If everything looks ok, then you can up the
CO2 slightly, wait, observe, repeat. Patience is the key! Remember, too-elevated CO2 will stress the fish physiologically,
so keep an eye on them.

18 species/varieties of fish, 15 species/varieties of plants - The fish are finally ahead of the plants!
*560 gallons (2120 liters) in 5 tanks -> you do the math.

Last edited by DKRST; 05-31-2013 at 10:18 PM.
DKRST is offline  

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
eheim 2213, need some advice? Redins DIY Aquarium 2 02-18-2012 07:43 AM
eheim 2213 sharelove Freshwater Aquarium Equipment 5 04-09-2011 10:26 PM
New eheim 2213 question KSASTER2 Beginner Freshwater Aquarium 16 03-31-2010 10:25 PM
Priming EHEIM 2213 LisaC144 Beginner Freshwater Aquarium 17 02-23-2010 12:36 PM
I've just done my first Eheim 2213 maintenance and... gilfish Beginner Freshwater Aquarium 3 06-03-2007 07:45 PM

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

For the best viewing experience please update your browser to Google Chrome