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-   -   DIY Inline CO2 Diffuser (http://www.arofanatics.com/forums/showthread.php?t=462909)

qngwn 12-05-2011 03:51 AM

DIY Inline CO2 Diffuser
 
Hi all,

Just building on the idea og an inline CO2 diffuser, not reactor.
http://www.greenleafaquariums.com/co...-diffuser.html

I kind of DIY-ed something like that.. but of course not in the tank.
Perhaps you guys would like to take a look at the pictures. i rather not type thousands of words..

Basically i used:
acrylic tube of 2 inches - $0.50
air stone - $0.30
check valve - $1.50
leftover plastic tubing for CO2 of 10cm - Y618 sells $0.20 for 1m.
glue gun - silicon will do as well, as long as water does not come out

Total cost -estimated $2.50

although i know that using a CO2 atomizer will be much better, but would not know if this thing would work out.. so decided to spend 30cents instead of $3.

I placed this DIY part on the inline to my canister filter, similiar to that of the actual one in the link shown above, just that mine is external, and costs less than 1/10 of the other's price.

Turned on my solenoid, and watch the CO2 bubbles coming out from the airstone, going against the flow of the water, and getting sucked into the canister.

Assuming that the bubbles have to go through all the many layers of filter and rings in the canister, get stirred by the impeller and out together with the flow of the water into my rainbar, i must say that 95% of the CO2 were dissolved. of course with the occasional fine bubbles of CO2 coming out from my rainbars.

I suggest those who are interested to try this out, to use this only if your set up needs low bubble per sec counts as i doubt that alot of co2 would be dissolved by the time the water goes back into the tank.

of course, please comment and advise! my first DIY here though..
(maybe i'll pull the airstone out and change to an atomizer.. but lazy to unplug everything)

Pictures shown below.
http://tapatalk.com/mu/dcff021a-d822-a823.jpg
http://tapatalk.com/mu/dcff023c-d837-86d8.jpg
drilled a hole, just big enough to squeeze the plastic tubing through.
http://tapatalk.com/mu/dcff0240-d847-d15c.jpg
http://tapatalk.com/mu/dcff0241-d856-9993.jpg
http://tapatalk.com/mu/dcff0243-d86c-0201.jpg
Very fine bubbles going into the canister.. iphone camera cant capture!

fireblade 13-05-2011 12:48 PM

nice job for the DIY..
but I very worry if the clip give way or the hose decided to loose grip, then there will be lots of cleaning to do..

FYI the boyu brand is cheaper, got it at $6 although ur DIY is still cheaper.. :) nice job ..
even for the Boyu reactor, I am also very worried if one day things decided to fail... and I will have a flooded room...

ymmij 13-05-2011 12:56 PM

please correct me if i am wrong....

you mentioned that you connected the diffuser to the inline of the canister filter. i would not advise that.

i was informed that co2 might corrode the impeller of the filter. i rather you place the diffuser at the outline of the filter.

BettaCloud 19-05-2011 12:33 AM

Quote:

Originally Posted by fireblade (Post 8443843)
nice job for the DIY..
but I very worry if the clip give way or the hose decided to loose grip, then there will be lots of cleaning to do..

FYI the boyu brand is cheaper, got it at $6 although ur DIY is still cheaper.. :) nice job ..
even for the Boyu reactor, I am also very worried if one day things decided to fail... and I will have a flooded room...

was wondering if drilled onto the hose/piping, will it be better? then use sealant to seal up any opening.

just my little humble thought. :D

natsuboku 19-05-2011 11:59 AM

Just one consideration, your piping might grow those white flaky form of algae in it...

limz_666 19-05-2011 02:04 PM

think it suppose to be install at outlet

EvolutionZ 19-05-2011 02:20 PM

yes, the bubbles will get trapped and your canister will have problem later on if the co2 is going into your canister..

aquanatix 19-05-2011 02:48 PM

Quote:

Originally Posted by ymmij (Post 8443860)
please correct me if i am wrong....

you mentioned that you connected the diffuser to the inline of the canister filter. i would not advise that.

i was informed that co2 might corrode the impeller of the filter. i rather you place the diffuser at the outline of the filter.

1st time I've read about the corrosion issue,anyone else here came across similar information?

qingwen 27-05-2011 11:19 AM

Quote:

Originally Posted by fireblade (Post 8443843)
nice job for the DIY..
but I very worry if the clip give way or the hose decided to loose grip, then there will be lots of cleaning to do..

FYI the boyu brand is cheaper, got it at $6 although ur DIY is still cheaper.. :) nice job ..
even for the Boyu reactor, I am also very worried if one day things decided to fail... and I will have a flooded room...

well, thats is why i got a clip to clip on!
the hose is as big as the acrylic tube, and i had to heat it to make it soft andfit the tubing it..

better to be safe than sorry!

qingwen 27-05-2011 11:22 AM

Quote:

Originally Posted by BettaCloud (Post 8453557)
was wondering if drilled onto the hose/piping, will it be better? then use sealant to seal up any opening.

just my little humble thought. :D

well, it's possible as well.. but it will be difficult to fit an air stone inside, especially if the hose is longg.


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