Co2 defuser question
Planted Tank Forums
Your Tanks Image Hosting *Tank Tracker * Plant Profiles Fish Profiles Planted Tank Guide Photo Gallery Articles

Go Back   The Planted Tank Forum > Specific Aspects of a Planted Tank > Equipment


Reply
 
Thread Tools Display Modes
Old 02-05-2013, 01:43 PM   #1
waddo
Algae Grower
 
PTrader: (0/0%)
Join Date: Jan 2013
Location: Tokyo
Posts: 16
Default

Co2 defuser question


Hi all

I have a CO2 defuser similar to the linked photo. It's also the bubble counter. The instruction say to half fill it with water (so you can count the bubbles) but it always fills all the way to the top within and hour or so. This means there is virtually no air in the compartment.

So my question: is there a reason and a way to stop it filling with water (I had one many years ago which did not); and also, does it actually make any difference if it is half full or not?

Cheers

http://www.smartaquarist.com/wp-cont.../glass-co2.jpg
waddo is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-05-2013, 04:01 PM   #2
ronnie6989
Algae Grower
 
ronnie6989's Avatar
 
PTrader: (0/0%)
Join Date: Jan 2013
Location: East Prov RI
Posts: 80
Default

Just use a check valve in the line after bubble counter and before diffuser....
Ronnie
ronnie6989 is offline   Reply With Quote
Old 02-05-2013, 05:12 PM   #3
Yankee
Planted Tank Obsessed
 
Yankee's Avatar
 
PTrader: (4/100%)
Join Date: Jan 2013
Location: Oregon
Posts: 324
Default

I've found that these types of diffusers are inaccurate in terms of providing a bubble count. The pressure at the top near the diffuser is different than the pressure nearest the nossel of the CO2 tank because the diffuser is squeezing the bubbles and restricting them a bit. Try using an inline bubble counter and you'll be a lot more confident in your readings.
Yankee is offline   Reply With Quote
Old 02-06-2013, 12:34 AM   #4
waddo
Algae Grower
 
PTrader: (0/0%)
Join Date: Jan 2013
Location: Tokyo
Posts: 16
Default

Sorry I don't understand either of these replies. The bubble counter and the defuser are combined, not separate. My question is, why does the defuser fill completely with water even though the instructions say to half fill it. And second, will having no air in the top part of the chamber stop it working properly?

Cheers
waddo is offline   Reply With Quote
Old 02-06-2013, 12:59 AM   #5
Darkblade48
Moderator
 
Darkblade48's Avatar
 
PTrader: (3/100%)
Join Date: Jan 2008
Location: Japan
Posts: 9,259
Default

Quote:
Originally Posted by waddo View Post
Sorry I don't understand either of these replies. The bubble counter and the defuser are combined, not separate. My question is, why does the defuser fill completely with water even though the instructions say to half fill it. And second, will having no air in the top part of the chamber stop it working properly?

Cheers
To me, those instructions seem strange; the diffuser that you have will naturally fill with water with time. As mentioned, I would get a separate bubble counter so you can count the bubbles (if you really want to).

Having no air in the top part of the diffuser will not stop it from functioning properly.
__________________
Anthony

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   Reply With Quote
Old 02-06-2013, 12:37 PM   #6
waddo
Algae Grower
 
PTrader: (0/0%)
Join Date: Jan 2013
Location: Tokyo
Posts: 16
Default

thanks for the reply. I was just wondering though, even if it is full of water I can still see the bubbles going up from the base, so is there any advantage having an external bubble counter?

Also, do you know anything about the ADA drop checker?

http://www.adana.co.jp/en/products/n.../drop_checker/
waddo is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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

Forum Jump


All times are GMT. The time now is 10:43 AM.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright Planted Tank LLC 2012