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.
  2. Unfortunately for Photobucket users, things have changed in a big way as of June 26th they are rolling out a $399 per year subscription fee for those who want to hotlink images from Photobucket’s servers to display elsewhere.
    This does not mean it only affects this site, It now means that billions of images across the Web now display an error message instead of the image in question. :(
    https://barrreport.com/threads/attention-photobucket-users.14377/
    Dismiss Notice

Dosing pumps and sedimentation?

Discussion in 'General Plant Topics' started by Laith, Jun 7, 2005.

  1. Laith

    Laith Lifetime Charter Member
    Lifetime Member

    Joined:
    Jan 24, 2005
    Messages:
    182
    Likes Received:
    0
    Tom, I have heard that you use dosing pumps on some of your tanks. I'm about to install a set of dosing pumps as well (the Aqua-Medic dual pump and timer RD2) but have a question:

    How do you deal with the fert solution "settling" in the holding container over time? I'm imagining that after a couple of day (or quicker), the fert solution needs shaking or mixing to get an even concentration of ferts in the dosing?

    I know Greg was also mulling over the same question recently...
     
  2. Greg Watson

    Greg Watson Administrator
    Staff Member Administrator

    Joined:
    Jan 23, 2005
    Messages:
    5,023
    Likes Received:
    1
    Re: Dosing pumps and sedimentation?

    I have parts ... lots of parts ... as soon as the dosing pumps arrive, I will be assembing and testing ...

    I have got to remember to take pictures ... lots of pictures of parts ...

    Greg
     
  3. Tom Barr

    Tom Barr Founder
    Staff Member Administrator Social Group Admin

    Joined:
    Jan 23, 2005
    Messages:
    18,474
    Likes Received:
    341
    Re: Dosing pumps and sedimentation?

    I have not had issues with this.

    I use a larger reserviror for the dosing, the pumps dose about 30mls per minute. So for 6 minutes I dose 180 mls of solution of the macro nutrients.
    This adds about 3ppm NO3/.7ppm of PO4 per dose/per day.

    I have a trace mix added at 60mls per day, it's slightly diluted in water to add 45mls daily, but 60mls for 2 minutes.

    Smaller tanks either need large reservirors or short time frames.

    Adding some acid will keep the fungus and solids from the trace solution.
    KH2PO4 and KNO3 are highly soluble.

    Check the lines peroidically also.

    Regards,
    Tom Barr
     
  4. mrditty

    mrditty Junior Poster

    Joined:
    Feb 8, 2005
    Messages:
    1
    Likes Received:
    0
    Re: Dosing pumps and sedimentation?

    I used an IV pump for a year untill it died to dose a large tank to advoid any settleing issues I droped a power head in to the resivor.
     
  5. Tom Barr

    Tom Barr Founder
    Staff Member Administrator Social Group Admin

    Joined:
    Jan 23, 2005
    Messages:
    18,474
    Likes Received:
    341
    Re: Dosing pumps and sedimentation?

    Some trace mixes are better about settling than others.
    TMG seems to be one the better ones.

    Regards,
    Tom Barr
     
  6. magicmagni

    magicmagni Prolific Poster

    Joined:
    May 15, 2005
    Messages:
    55
    Likes Received:
    0
    Re: Dosing pumps and sedimentation?


    Flourish settle quit a bit for me, but I have an airstone that "mixes it" for a few minutes each day before dosing and this seems to help it out.
     
  7. Raul-7

    Raul-7 Junior Poster

    Joined:
    Sep 8, 2005
    Messages:
    3
    Likes Received:
    0
    Re: Dosing pumps and sedimentation?

    Sorry to bring this back up, but I'm interested in dosers. Wouldn't you be oxidizing the nutrients by adding an airstone? Would adding a mini-powerhead help or is it not neccesary?
     
  8. Laith

    Laith Lifetime Charter Member
    Lifetime Member

    Joined:
    Jan 24, 2005
    Messages:
    182
    Likes Received:
    0
    Re: Dosing pumps and sedimentation?

    I've got a mini-powerhead hooked up to a timer in my macro mix reservoir. This reservoir (16l) holds a mix of KNO3, K2SO4, KH2PO4 and Excel. I'm still not sure I really need the powerhead.

    My trace elements reservoir is an old 500ml fert bottle and holds Flourish. Since the bottle is white I can't tell if things settle in it and it's too small to put a powerhead into. I was planning to use a clear bottle for a short period just to be able to see if there is settling but haven't got around to it yet.
     
Loading...

Share This Page