This site is supported by the advertisements on it, please disable your AdBlocker so we can continue to provide you with the quality content you expect.
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

CO2 Misting

Discussion in 'CO2 Enrichment' started by Singtoh, Feb 8, 2010.

  1. Singtoh

    Singtoh Prolific Poster

    Joined:
    Sep 12, 2009
    Messages:
    88
    Likes Received:
    0
    Hello All,

    I have recently changed to CO2 misting with a modified impeller on an internal Ehiem filter, and I must say it really smashes the CO2 into micro bubbles, and the plants really seem to love it. My question is this: Now that I am misting CO2 in my tank, my drop checker is going from blue just after lights and CO2 on, to lime green/yellow within about 30 minutes. I am using standard 4dkh solution in the DC and a standard PH reagent. I realize these micro bubbles are getting into the DC air gap and making the color change quicker, so how do I work with the DC and misting. IF it goes yellow because micro bubbles are getting in there, how do I gauge the reading of the DC. The DC by the way is on the complete opposite side of the tank and is not in direct flow output of the EHEIM CO2 smasher. Hope this isn't too stupid a question. Just a side note. I went and got some DI water and mixed my own 4dkh solution, with proper scales and checked it with calibrated tests and went about mixing, checked my solution and it was 8dkh instead of 4, checked it again with another test kit, same reading, then checked the DI water straight out of the bottle and low and behold it has a 4dkh reading. WTF.:confused: This is Thailand(TIT),:) so all the measuring and mixing was for naught i guess. Although I always assumed DI water should have a dkh of zero. Any thoughts on this will be greatly appreciated. Mainly about the misting and drop checker thing, I'll go to the chemist tomorrow and get a 4dkh solution to eliminate bogus DI water I guess, since I would not know what else could be in the DI water. Thanks in advance for any advice.

    Cheers,

    Singtoh
     
  2. nipat

    nipat Guru Class Expert

    Joined:
    May 23, 2009
    Messages:
    665
    Likes Received:
    0
    I think a solution may be to change to a membrane based DC.
    http://www.plantedtank.net/forums/diy/52991-membrane-drop-checker-1-1-minute.html

    Don't know if anyone has tried making one with umbrella cloth?
     
  3. Biollante

    Biollante Lifetime Charter Member
    Lifetime Member

    Joined:
    Jun 21, 2009
    Messages:
    3,210
    Likes Received:
    1
    Tyvek Magic

    Hi Singtoh, Nipat,

    I have made them from tyvek from in US Postal Service mailers available in mailboxes all over the place, never from umbrella material, but if the umbrella material is tyvek it will work. :)

    http://www.aquaticplantcentral.com/forumapc/diy-aquarium-projects/32100-diy-drop-checker-12.html

    Tevek is a selective barrier material used in all kinds of stuff. ;)

    The advantages are much quicker reading/response time, no worrying about reference solution being compromised. :cool:

    Biollante
     
    #3 Biollante, Feb 9, 2010
    Last edited by a moderator: Feb 9, 2010
  4. bsmith782

    bsmith782 Guru Class Expert

    Joined:
    Mar 14, 2007
    Messages:
    147
    Likes Received:
    0
    Singtoh, what did you do to the impeller to modify it?
     
  5. Singtoh

    Singtoh Prolific Poster

    Joined:
    Sep 12, 2009
    Messages:
    88
    Likes Received:
    0
    Hi bsmith,

    I had it running on an internal filter, which was working pretty good, but decided to do it to a powerhead and it's even better now, a bit more powerful. I just heated up a needle and put small holes in the impellar, in pairs, one obove the other and in sets of 3, 6 holes to each impellar blade, then ran small gauge fishing line into one hole, tied a knot in it and pulled it back against the first hole, then did like a zig zag pattern from one impellar blade to the next forming as nice a mesh as I could, going thru all the holes in each impellar blade, some of them twice, then when I came back to the tie off point when I had a nice mesh, I tied it of and put a spot of superglue on the knot just to be sure it didn't come loose. It works pretty good, then I just feed the co2 line to the bottom of the strainer on the powerhead, and inside the strainer is a limewood airstone, if you get what I mean, smaller bubbles going in, smaller bubbles coming out I guess, and I can hardly hear the powerhead breaking bubbles. Micro bubbles everywhere, it's really good.

    Cheers,

    Singtoh
     
    #5 Singtoh, Mar 3, 2010
    Last edited by a moderator: Mar 3, 2010
Loading...

Share This Page