Mini CO2 reactor in an Aquaclear HOB filter v1.3b (shown on a Fluval Edge) - Page 2 - The Planted Tank Forum

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post #16 of 29 (permalink) Old 03-16-2011, 10:36 AM
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Originally Posted by Tamelesstgr View Post
What would happen if you just left the end of the tubing open and bubble inside the filter? I have an AC70 I am wanting to try this on.
I did this modification, but I didn't have any diffuser to use so I just left the tubing open to bubble inside the filter. Unfortunately the CO2 bubble didn't seem to stay in the filter like that and bubble right back out of the filter through the middle section, so I wasn't seeing much if any difference in my CO2 levels as a result. I suppose they might stay within the filter better if they were much smaller.

I now have my CO2 off though, as I couldn't get any sort of a consistent bubble rate and one day discovered that my rate of a bubble every few seconds had turned into constant CO2 stream which would have suffocated my fish if I hadn't reacted immediately. So I'm looking for a new needle valve now to add in-line.
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post #17 of 29 (permalink) Old 03-27-2011, 11:33 PM
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I bought an inexpensive ceramic disk nano diffuser, but it looks larger than it did in the photo and still doesn't fit under that plate by the impeller. So I was about to start to modify it by sawing it into sections and then reassembling it, but then I went and rummaged through the kitchen until I found a chopstick. Chopstick piece works fine, but it does make a little almost squeaky noise whenever bubbles come out.

By the way, how many bubbles per second do you find to be the best in order to achieve 20-30 ppm in an Edge?
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post #18 of 29 (permalink) Old 03-27-2011, 11:41 PM
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very nice, i will have to do that with my aquaclear HOB filter. thank you!

Happy plantkeeping!
check it out!!!! -->
http://www.plantedtank.net/forums/sh...d.php?t=148862
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post #19 of 29 (permalink) Old 04-11-2011, 08:47 PM
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Wow!

I will definitely try it!

THanks
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post #20 of 29 (permalink) Old 05-01-2011, 02:48 PM
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Do not using the chopstick piece makes any difference at the end?????







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post #21 of 29 (permalink) Old 05-01-2011, 04:18 PM
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Great mod. I actually did this with my filter a few months ago, but I didn't put a diffuser in at all, just stuck the tubing through the hole. The impeller chops it up and it gets caught in the media. Works like a charm.

I also turn off the filter every day to feed baby brine, and when I power it back up it is still able to prime, even with the hole clogged.
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post #22 of 29 (permalink) Old 03-21-2012, 10:06 AM
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very nice mod here. I like the ada diffusor in the tank! keep up the good work! I have to try this now.
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post #23 of 29 (permalink) Old 05-03-2012, 09:35 PM
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i'm going to give this a shot tonight! i'll try the no chopstick method first. (only because i dont have any floating around yet)
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post #24 of 29 (permalink) Old 05-05-2012, 03:51 AM
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Don't you get a lot of CO2 offgassed as the water flows out the filter? I would imagine that it would be difficult to keep up the amount of CO2 in the water column.
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post #25 of 29 (permalink) Old 05-05-2012, 01:31 PM
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Originally Posted by Gnomecatcher View Post
Don't you get a lot of CO2 offgassed as the water flows out the filter? I would imagine that it would be difficult to keep up the amount of CO2 in the water column.
I also agree with Gnomecatcher on this, unless you have plants in HOB or have a very high outflow rate.

I am also seeking a method such as a bubble ladder or glass bell to keep CO2 in longer contact with water.
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post #26 of 29 (permalink) Old 07-18-2012, 06:58 PM
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Originally Posted by AirstoND View Post
I also agree with Gnomecatcher on this, unless you have plants in HOB or have a very high outflow rate.

I am also seeking a method such as a bubble ladder or glass bell to keep CO2 in longer contact with water.
https://sites.google.com/site/aquari...ter-co2-topper
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post #27 of 29 (permalink) Old 01-09-2014, 04:32 AM
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anyone checked how efficient the chopstick is?
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post #28 of 29 (permalink) Old 01-09-2014, 05:05 AM
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Let us know how you do!

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post #29 of 29 (permalink) Old 01-09-2014, 03:51 PM
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possibly show a step by step video on how to do this? im the type of person that wants to make sure im doing it right lol ihave a aqua clear hob filter and this would be a great addition!
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