Difference between CO2 Reactor and diffuser? - The Planted Tank Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 18 (permalink) Old 11-02-2011, 03:08 PM Thread Starter
Planted Member
 
PTrader: (0/0%)
Join Date: Jan 2011
Location: England
Posts: 246
Difference between CO2 Reactor and diffuser?

I just swapped from using a external CO2 reactor to a Up Aqua Atomizer which dissolves CO2 into minute bubbles.

The Co2 reactor was good but made a bit of noise and reduced the flow. I also thought it was more efficient but it seems like I have to inject less Co2 now when I use a diffuser instead. The downside is that the water goes slightly hazy or milky because of the tiny bubbles. Which is a major downside as my water was crystal clear before.

Other than mentioned, what's the difference for plants between using something like a reactor that dissolves CO2 completely and a diffuser with micro bubbles? What's considered to be better?
Golightly is offline  
Sponsored Links
Advertisement
 
post #2 of 18 (permalink) Old 11-02-2011, 05:32 PM
Planted Tank Obsessed
 
PTrader: (0/0%)
Join Date: Sep 2010
Location: las vegas
Posts: 352
IMO reactor, they can be external, max diffusion, and no soda can effect
ddrfreak_tung is offline  
post #3 of 18 (permalink) Old 11-02-2011, 07:01 PM
Planted Tank Enthusiast
 
Naekuh's Avatar
 
PTrader: (1/100%)
Join Date: Oct 2011
Location: Los Angeles
Posts: 884
+1 to the op's question..

where is one needed more then the other...

or is the reactor just better overall?
Naekuh is offline  
 
post #4 of 18 (permalink) Old 11-02-2011, 07:45 PM Thread Starter
Planted Member
 
PTrader: (0/0%)
Join Date: Jan 2011
Location: England
Posts: 246
Quote:
Originally Posted by ddrfreak_tung View Post
IMO reactor, they can be external, max diffusion, and no soda can effect
Oddly enough having a in-line diffuser seem to be more effective than a external reactor though. Now with the diffuser I inject less CO2 to accomplish the same PH level.

I'm interested in just finding out what's seen as more effective for plants.
Golightly is offline  
post #5 of 18 (permalink) Old 11-02-2011, 07:59 PM
Plant Clown
 
kevmo911's Avatar
 
PTrader: (32/100%)
Join Date: Sep 2010
Location: Greensboro, NC
Posts: 4,729
If you see bubbles, you see non-diffused CO2. No bubbles, 100% diffusion.
kevmo911 is offline  
post #6 of 18 (permalink) Old 11-02-2011, 08:07 PM Thread Starter
Planted Member
 
PTrader: (0/0%)
Join Date: Jan 2011
Location: England
Posts: 246
Quote:
Originally Posted by kevmo911 View Post
If you see bubbles, you see non-diffused CO2. No bubbles, 100% diffusion.
I do understand that. But I can clearly see that the PH in the tank is lowered more efficiently when using a diffuser. I inject less CO2 to achieve PH 6.00. Yet the reactor dissolved all CO2, no bubbles seen.

Even so, what I'm interested in finding out is if the 100% dissolved CO2 is better or worse for plants than tiny micro bubbles that the inline diffuser creates. Those tiny bubbles lands and collects on the plants.
Golightly is offline  
post #7 of 18 (permalink) Old 11-02-2011, 10:14 PM
Planted Tank Guru
 
Jeff5614's Avatar
 
PTrader: (52/100%)
Join Date: Dec 2005
Location: TN
Posts: 3,609
Quote:
Originally Posted by Golightly View Post
I do understand that. But I can clearly see that the PH in the tank is lowered more efficiently when using a diffuser. I inject less CO2 to achieve PH 6.00. Yet the reactor dissolved all CO2, no bubbles seen.

Even so, what I'm interested in finding out is if the 100% dissolved CO2 is better or worse for plants than tiny micro bubbles that the inline diffuser creates. Those tiny bubbles lands and collects on the plants.
Current thinking, I think, is that mist might be a bit more effective due to the small CO2 bubbles on the leaves reducing the boundary layer and gaseous CO2 diffusing directly through the leaf. Of course I read a lot of stuff on here and other forums and sometimes it all runs together.
Jeff5614 is offline  
post #8 of 18 (permalink) Old 11-03-2011, 02:19 PM
Planted Tank Guru
 
HD Blazingwolf's Avatar
 
PTrader: (8/100%)
Join Date: May 2011
Location: Chattanooga, TN
Posts: 4,907
no bubbles = 100% diffusion. correct. maybe there was a leak. all plants can take the dissolved form so either works butthe mist is good for some plants. rotala macranda, for example responds very well to it IMO

Sump Pimp #7

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.
HD Blazingwolf is offline  
post #9 of 18 (permalink) Old 11-03-2011, 02:25 PM
Plant Clown
 
kevmo911's Avatar
 
PTrader: (32/100%)
Join Date: Sep 2010
Location: Greensboro, NC
Posts: 4,729
Quote:
Originally Posted by Golightly View Post
I do understand that. But I can clearly see that the PH in the tank is lowered more efficiently when using a diffuser. I inject less CO2 to achieve PH 6.00. Yet the reactor dissolved all CO2, no bubbles seen.

Even so, what I'm interested in finding out is if the 100% dissolved CO2 is better or worse for plants than tiny micro bubbles that the inline diffuser creates. Those tiny bubbles lands and collects on the plants.
That doesn't make sense to me. Bubbles mean that there is un-dissolved CO2 in the water, which means that less CO2 has been absorbed. Rational thought says that the pH should be lower with a 100% efficient external reactor at the same CO2 rate. If I had to guess, I'd say that somehow the bubbles are throwing the probe reading off, though I couldn't say how.

As for bubbles being more beneficial to some plants, that's possible. It seems odd, but I'm willing to go with it. I just haven't seen any evidence to back it up.
kevmo911 is offline  
post #10 of 18 (permalink) Old 11-03-2011, 11:38 PM Thread Starter
Planted Member
 
PTrader: (0/0%)
Join Date: Jan 2011
Location: England
Posts: 246
Quote:
Originally Posted by kevmo911 View Post
That doesn't make sense to me. Bubbles mean that there is un-dissolved CO2 in the water, which means that less CO2 has been absorbed. Rational thought says that the pH should be lower with a 100% efficient external reactor at the same CO2 rate. If I had to guess, I'd say that somehow the bubbles are throwing the probe reading off, though I couldn't say how.

As for bubbles being more beneficial to some plants, that's possible. It seems odd, but I'm willing to go with it. I just haven't seen any evidence to back it up.
I can't explain it either but the bubble rate I have now to achieve the same PH value as before is lower. I've recalibrated my PH controller and it's not that. The drop checker is also telling me the same.

The UP Aqua inline Atomizer is very good actually, the bubbles are tiny and not like what you get with a standard diffuser.
Golightly is offline  
post #11 of 18 (permalink) Old 11-06-2011, 01:26 AM
Wannabe Guru
 
PTrader: (1/100%)
Join Date: Dec 2003
Location: Taunton ,MA
Posts: 1,694
I'm thinking of going back to a reactor for my 110g tank and Eheim 2262 filter , I'm using a Atomic diffuser and my Bubble Count is very high IMO: the tiny bubbles go every where an also float up to the surface . where as a Aquariumplant.com has a house filter with a small power head inside to get 110% diffusion before it goes into the tank an others would comment that they don't see flow reduction .
inkslinger is offline  
post #12 of 18 (permalink) Old 11-06-2011, 01:42 AM
Planted Tank Obsessed
 
PTrader: (2/100%)
Join Date: Oct 2010
Location: canada
Posts: 496
to state the obvious there are bubbles from using a reactor there just big and out of sight
with a inline atomic diffuser the whole tank is a big reactor
if the bubbles are very tiny they dissolve before making it to the surface

i have found 4 ways of decreasing the mist effect in the aquarium
1)faster flow
2) add length to output hose
3) up co2 pressure
4)add two diffusers (parallel)and lower bubble rate to each
willknowitall is offline  
post #13 of 18 (permalink) Old 11-06-2011, 01:17 AM
Planted Tank Obsessed
 
kubalik's Avatar
 
PTrader: (35/100%)
Join Date: Jul 2011
Location: NY
Posts: 494
maybe the little-bitty bubbles are fouling the ph controller/checker ....?
kubalik is offline  
post #14 of 18 (permalink) Old 11-06-2011, 01:39 AM
Planted Tank Obsessed
 
PTrader: (2/100%)
Join Date: Oct 2010
Location: canada
Posts: 496
Quote:
Originally Posted by kubalik View Post
maybe the little-bitty bubbles are fouling the ph controller/checker ....?
possible i could imagine tiny bubbles getting in to the drop checker
i have my ph probe inline before my diffuser , showing my diffuser is very efficient indeed
willknowitall is offline  
post #15 of 18 (permalink) Old 11-06-2011, 01:50 AM
Wannabe Guru
 
VeeSe's Avatar
 
PTrader: (8/100%)
Join Date: Apr 2011
Location: Richmond, VA
Posts: 1,423
Send a message via AIM to VeeSe Send a message via MSN to VeeSe
Have you increased your working pressure on the regulator in order to accommodate the requirements for the in-line diffuser? If so, one "bubble" now contains more CO2 gas than before, so a lower bubble rate to attain the same pH drop may not mean a lower amount of CO2.

-VeeSe

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
VeeSe 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